state stringlengths 0 159k | srcUpToTactic stringlengths 387 167k | nextTactic stringlengths 3 9k | declUpToTactic stringlengths 22 11.5k | declId stringlengths 38 95 | decl stringlengths 16 1.89k | file_tag stringlengths 17 73 |
|---|---|---|---|---|---|---|
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
⊢ HasFPow... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | refine' ⟨fun ⟨r, _, r_pos, h⟩ =>
eventually_of_mem (EMetric.ball_mem_nhds 0 r_pos) fun _ => by simpa using h, _⟩ | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
x✝¹ : Has... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simpa using h | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
⊢ (∀ᶠ (z ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp only [Metric.eventually_nhds_iff] | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
⊢ (∃ ε > ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | rintro ⟨r, r_pos, h⟩ | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | refine' ⟨p.radius ⊓ r.toNNReal, by simp, _, _⟩ | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
r : ℝ
r_p... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp only [r_pos.lt, lt_inf_iff, ENNReal.coe_pos, Real.toNNReal_pos, and_true_iff] | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | obtain ⟨z, z_pos, le_z⟩ := NormedField.exists_norm_lt 𝕜 r_pos.lt | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1.intro.intro
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeri... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | have : (‖z‖₊ : ENNReal) ≤ p.radius := by
simp only [dist_zero_right] at h
apply FormalMultilinearSeries.le_radius_of_tendsto
convert tendsto_norm.comp (h le_z).summable.tendsto_atTop_zero
funext
simp [norm_smul, mul_comm] | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
r : ℝ
r_p... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp only [dist_zero_right] at h | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
r : ℝ
r_p... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | apply FormalMultilinearSeries.le_radius_of_tendsto | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case h
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
r ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | convert tendsto_norm.comp (h le_z).summable.tendsto_atTop_zero | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case h.e'_3.h
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | funext | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case h.e'_3.h
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp [norm_smul, mul_comm] | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1.intro.intro
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeri... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | refine' lt_of_lt_of_le _ this | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1.intro.intro
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeri... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp only [ENNReal.coe_pos] | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_1.intro.intro
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeri... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | exact zero_lt_iff.mpr (nnnorm_ne_zero_iff.mpr (norm_pos_iff.mp z_pos)) | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_2
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp only [EMetric.mem_ball, lt_inf_iff, edist_lt_coe, apply_eq_pow_smul_coeff, and_imp,
dist_zero_right] at h ⊢ | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_2
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | refine' fun {y} _ hyr => h _ | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
case intro.intro.refine'_2
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simpa [nndist_eq_nnnorm, Real.lt_toNNReal_iff_coe_lt] using hyr | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib.Analysis.Analytic.Basic.1430_0.jQw1fRSE1vGpOll | /-- A function `f : 𝕜 → E` has `p` as power series expansion at a point `z₀` iff it is the sum of
`p` in a neighborhood of `z₀`. This makes some proofs easier by hiding the fact that
`HasFPowerSeriesAt` depends on `p.radius`. -/
theorem hasFPowerSeriesAt_iff :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 0, HasSum (fun n... | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
⊢ HasFPow... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | rw [← map_add_left_nhds_zero, eventually_map, hasFPowerSeriesAt_iff] | theorem hasFPowerSeriesAt_iff' :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 z₀, HasSum (fun n => (z - z₀) ^ n • p.coeff n) (f z) := by
| Mathlib.Analysis.Analytic.Basic.1457_0.jQw1fRSE1vGpOll | theorem hasFPowerSeriesAt_iff' :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 z₀, HasSum (fun n => (z - z₀) ^ n • p.coeff n) (f z) | Mathlib_Analysis_Analytic_Basic |
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
p : FormalMultilinearSeries 𝕜 𝕜 E
f : 𝕜 → E
z₀ : 𝕜
⊢ (∀ᶠ (z ... | /-
Copyright (c) 2020 Sébastien Gouëzel. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sébastien Gouëzel, Yury Kudryashov
-/
import Mathlib.Analysis.Calculus.FormalMultilinearSeries
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Logic.Equiv.Fin
import Ma... | simp_rw [add_sub_cancel'] | theorem hasFPowerSeriesAt_iff' :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 z₀, HasSum (fun n => (z - z₀) ^ n • p.coeff n) (f z) := by
rw [← map_add_left_nhds_zero, eventually_map, hasFPowerSeriesAt_iff]
| Mathlib.Analysis.Analytic.Basic.1457_0.jQw1fRSE1vGpOll | theorem hasFPowerSeriesAt_iff' :
HasFPowerSeriesAt f p z₀ ↔ ∀ᶠ z in 𝓝 z₀, HasSum (fun n => (z - z₀) ^ n • p.coeff n) (f z) | Mathlib_Analysis_Analytic_Basic |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
⊢ verschiebung (shift x (Nat.succ k)) = shift x k | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | ext ⟨j⟩ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
| Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
case h.zero
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
⊢ coeff (verschiebung (shift x (Nat.succ k))) Nat.zero = coeff (shift x k) Nat.zero | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rw [verschiebung_coeff_zero, shift_coeff, h] | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
ext ⟨j⟩
· | Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
case h.zero.a
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
⊢ k + Nat.zero < k + 1 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | apply Nat.lt_succ_self | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
ext ⟨j⟩
· rw [verschiebung_coeff_zero, shift_coeff, h]
| Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
case h.succ
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
n✝ : ℕ
⊢ coeff (verschiebung (shift x (Nat.succ k))) (Nat.succ n✝) = coeff (shift x k) (Nat.succ n✝) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | simp only [verschiebung_coeff_succ, shift] | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
ext ⟨j⟩
· rw [verschiebung_coeff_zero, shift_coeff, h]
apply Nat.lt_succ_self
· | Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
case h.succ
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
n✝ : ℕ
⊢ coeff x (Nat.succ k + n✝) = coeff x (k + Nat.succ n✝) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | congr 1 | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
ext ⟨j⟩
· rw [verschiebung_coeff_zero, shift_coeff, h]
apply Nat.lt_succ_self
· simp only [verschiebung_coeff_succ, shift]
| Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
case h.succ.e_a
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
h : ∀ i < k + 1, coeff x i = 0
n✝ : ℕ
⊢ Nat.succ k + n✝ = k + Nat.succ n✝ | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rw [Nat.add_succ, add_comm, Nat.add_succ, add_comm] | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k := by
ext ⟨j⟩
· rw [verschiebung_coeff_zero, shift_coeff, h]
apply Nat.lt_succ_self
· simp only [verschiebung_coeff_succ, shift]
congr 1
| Mathlib.RingTheory.WittVector.Domain.69_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_shift (x : 𝕎 R) (k : ℕ) (h : ∀ i < k + 1, x.coeff i = 0) :
verschiebung (x.shift k.succ) = x.shift k | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
n : ℕ
h : ∀ i < n, coeff x i = 0
⊢ x = (⇑verschiebung)^[n] (shift x n) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | induction' n with k ih | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
| Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case zero
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
h : ∀ i < Nat.zero, coeff x i = 0
⊢ x = (⇑verschiebung)^[Nat.zero] (shift x Nat.zero) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | cases x | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case zero.mk'
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
coeff✝ : ℕ → R
h : ∀ i < Nat.zero, coeff { coeff := coeff✝ } i = 0
⊢ { coeff := coeff✝ } = (⇑verschiebung)^[Nat.zero] (shift { coeff := coeff✝ } Nat.zero) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | simp [shift] | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· cases x; | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case succ
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
ih : (∀ i < k, coeff x i = 0) → x = (⇑verschiebung)^[k] (shift x k)
h : ∀ i < Nat.succ k, coeff x i = 0
⊢ x = (⇑verschiebung)^[Nat.succ k] (shift x (Nat.succ k)) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | dsimp | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· cases x; simp [shift]
· | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case succ
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
ih : (∀ i < k, coeff x i = 0) → x = (⇑verschiebung)^[k] (shift x k)
h : ∀ i < Nat.succ k, coeff x i = 0
⊢ x = (⇑verschiebung)^[k] (verschiebung (shift x (Nat.succ k))) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rw [verschiebung_shift] | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· cases x; simp [shift]
· dsimp; | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case succ
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
ih : (∀ i < k, coeff x i = 0) → x = (⇑verschiebung)^[k] (shift x k)
h : ∀ i < Nat.succ k, coeff x i = 0
⊢ x = (⇑verschiebung)^[k] (shift x k) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | exact ih fun i hi => h _ (hi.trans (Nat.lt_succ_self _)) | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· cases x; simp [shift]
· dsimp; rw [verschiebung_shift]
· | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
case succ.h
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
k : ℕ
ih : (∀ i < k, coeff x i = 0) → x = (⇑verschiebung)^[k] (shift x k)
h : ∀ i < Nat.succ k, coeff x i = 0
⊢ ∀ i < k + 1, coeff x i = 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | exact h | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) := by
induction' n with k ih
· cases x; simp [shift]
· dsimp; rw [verschiebung_shift]
· exact ih fun i hi => h _ (hi.trans (Nat.lt_succ_self _))
· | Mathlib.RingTheory.WittVector.Domain.79_0.4uLlcZNQ2uiRcjJ | theorem eq_iterate_verschiebung {x : 𝕎 R} {n : ℕ} (h : ∀ i < n, x.coeff i = 0) :
x = verschiebung^[n] (x.shift n) | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
⊢ ∃ n x', coeff x' 0 ≠ 0 ∧ x = (⇑verschiebung)^[n] x' | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
simp only [hall, zero_coeff] | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
⊢ ∃ k, coeff x k ≠ 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | by_contra! hall | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hall : ∀ (k : ℕ), coeff x k = 0
⊢ False | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | apply hx | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hall : ∀ (k : ℕ), coeff x k = 0
⊢ x = 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | ext i | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
case h
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hall : ∀ (k : ℕ), coeff x k = 0
i : ℕ
⊢ coeff x i = coeff 0 i | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | simp only [hall, zero_coeff] | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hex : ∃ k, coeff x k ≠ 0
⊢ ∃ n x', coeff x' 0 ≠ 0 ∧ x = (⇑verschiebung)^[n] x' | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | let n := Nat.find hex | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
simp only [hall, zero_coeff]
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hex : ∃ k, coeff x k ≠ 0
n : ℕ := Nat.find hex
⊢ ∃ n x', coeff x' 0 ≠ 0 ∧ x = (⇑verschiebung)^[n] x' | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | use n, x.shift n | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
simp only [hall, zero_coeff]
let n := Nat.find hex
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
case h
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hex : ∃ k, coeff x k ≠ 0
n : ℕ := Nat.find hex
⊢ coeff (shift x n) 0 ≠ 0 ∧ x = (⇑verschiebung)^[n] (shift x n) | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | refine' ⟨Nat.find_spec hex, eq_iterate_verschiebung fun i hi => not_not.mp _⟩ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
simp only [hall, zero_coeff]
let n := Nat.find hex
use n, x.shift n
| Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
case h
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝ : CommRing R
x : 𝕎 R
hx : x ≠ 0
hex : ∃ k, coeff x k ≠ 0
n : ℕ := Nat.find hex
i : ℕ
hi : i < n
⊢ ¬¬coeff x i = 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | exact Nat.find_min hex hi | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' := by
have hex : ∃ k : ℕ, x.coeff k ≠ 0 := by
by_contra! hall
apply hx
ext i
simp only [hall, zero_coeff]
let n := Nat.find hex
use n, x.shift n
refine' ⟨Nat.find_spec hex, e... | Mathlib.RingTheory.WittVector.Domain.88_0.4uLlcZNQ2uiRcjJ | theorem verschiebung_nonzero {x : 𝕎 R} (hx : x ≠ 0) :
∃ n : ℕ, ∃ x' : 𝕎 R, x'.coeff 0 ≠ 0 ∧ x = verschiebung^[n] x' | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
x y : 𝕎 R
⊢ x * y = 0 → x = 0 ∨ y = 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | contrapose! | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
x y : 𝕎 R
⊢ x ≠ 0 ∧ y ≠ 0 → x * y ≠ 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rintro ⟨ha, hb⟩ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
x y : 𝕎 R
ha : x ≠ 0
hb : y ≠ 0
⊢ x * y ≠ 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro.intro.intro.intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
y : 𝕎 R
hb : y ≠ 0
na : ℕ
wa : 𝕎 R
hwa0 : coeff wa 0 ≠ 0
ha : (⇑verschiebung)^[na] wa ≠ 0
⊢ (⇑verschiebung)^[na] wa * y ≠ 0 | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rcases verschiebung_nonzero hb with ⟨nb, wb, hwb0, rfl⟩ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro.intro.intro.intro.intro.intro.intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
na : ℕ
wa : 𝕎 R
hwa0 : coeff wa 0 ≠ 0
ha : (⇑verschiebung)^[na] wa ≠ 0
nb : ℕ
wb : 𝕎 R
hwb0 : coeff wb 0 ≠ 0
hb : (⇑verschiebung)^[nb] wb ≠ 0
⊢ (⇑verschiebung)^[na]... | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | refine' ne_of_apply_ne (fun x => x.coeff (na + nb)) _ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩
rcases verschiebung_nonzero hb with ⟨nb, wb, hwb0, rfl⟩
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro.intro.intro.intro.intro.intro.intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
na : ℕ
wa : 𝕎 R
hwa0 : coeff wa 0 ≠ 0
ha : (⇑verschiebung)^[na] wa ≠ 0
nb : ℕ
wb : 𝕎 R
hwb0 : coeff wb 0 ≠ 0
hb : (⇑verschiebung)^[nb] wb ≠ 0
⊢ (fun x => coeff x (n... | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | dsimp only | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩
rcases verschiebung_nonzero hb with ⟨nb, wb, hwb0, rfl⟩
refine' ne_of_apply_ne (fun x => x.coeff (na + nb)) _
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro.intro.intro.intro.intro.intro.intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
na : ℕ
wa : 𝕎 R
hwa0 : coeff wa 0 ≠ 0
ha : (⇑verschiebung)^[na] wa ≠ 0
nb : ℕ
wb : 𝕎 R
hwb0 : coeff wb 0 ≠ 0
hb : (⇑verschiebung)^[nb] wb ≠ 0
⊢ coeff ((⇑verschiebun... | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | rw [iterate_verschiebung_mul_coeff, zero_coeff] | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩
rcases verschiebung_nonzero hb with ⟨nb, wb, hwb0, rfl⟩
refine' ne_of_apply_ne (fun x => x.coeff (na + nb)) _
dsimp only
| Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
case intro.intro.intro.intro.intro.intro.intro
p : ℕ
R : Type u_1
hp : Fact (Nat.Prime p)
inst✝² : CommRing R
inst✝¹ : CharP R p
inst✝ : NoZeroDivisors R
na : ℕ
wa : 𝕎 R
hwa0 : coeff wa 0 ≠ 0
ha : (⇑verschiebung)^[na] wa ≠ 0
nb : ℕ
wb : 𝕎 R
hwb0 : coeff wb 0 ≠ 0
hb : (⇑verschiebung)^[nb] wb ≠ 0
⊢ coeff wa 0 ^ p ^ nb ... | /-
Copyright (c) 2022 Robert Y. Lewis. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Robert Y. Lewis
-/
import Mathlib.RingTheory.WittVector.Identities
#align_import ring_theory.witt_vector.domain from "leanprover-community/mathlib"@"b1d911acd60ab198808e853292106ee35... | exact mul_ne_zero (pow_ne_zero _ hwa0) (pow_ne_zero _ hwb0) | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) :=
⟨fun {x y} => by
contrapose!
rintro ⟨ha, hb⟩
rcases verschiebung_nonzero ha with ⟨na, wa, hwa0, rfl⟩
rcases verschiebung_nonzero hb with ⟨nb, wb, hwb0, rfl⟩
refine' ne_of_apply_ne (fun x => x.coeff (na + nb)) _
dsimp only
r... | Mathlib.RingTheory.WittVector.Domain.110_0.4uLlcZNQ2uiRcjJ | instance [CharP R p] [NoZeroDivisors R] : NoZeroDivisors (𝕎 R) | Mathlib_RingTheory_WittVector_Domain |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
x : R
hx : x ∈ jacobson I
y : R
hxy : I ⊔ span {y * x + 1} = ⊤
p : R
hpi : p ∈ I
q : R
hq : q ∈ span {y * x + 1}
hpq : p + q = 1
r : R
hr : r * (y * x + 1) = q
⊢ r * y * x + r - 1 ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [mul_assoc, ← mul_add_one r (y * x), hr, ← hpq, ← neg_sub, add_sub_cancel] | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I :=
⟨fun hx y =>
by_cases
(fun hxy : I ⊔ span {y * x + 1} = ⊤ =>
let ⟨p, hpi, q, hq, hpq⟩ := Submodule.mem_sup.1 ((eq_top_iff_one _).1 hxy)
let ⟨r, hr⟩ := mem_span_singleton'.1 hq
⟨r, by
-- P... | Mathlib.RingTheory.JacobsonIdeal.99_0.Lz0MgLQMj1bGzuN | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
x : R
hx : x ∈ jacobson I
y : R
hxy : I ⊔ span {y * x + 1} = ⊤
p : R
hpi : p ∈ I
q : R
hq : q ∈ span {y * x + 1}
hpq : p + q = 1
r : R
hr : r * (y * x + 1) = q
⊢ -p ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact I.neg_mem hpi | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I :=
⟨fun hx y =>
by_cases
(fun hxy : I ⊔ span {y * x + 1} = ⊤ =>
let ⟨p, hpi, q, hq, hpq⟩ := Submodule.mem_sup.1 ((eq_top_iff_one _).1 hxy)
let ⟨r, hr⟩ := mem_span_singleton'.1 hq
⟨r, by
-- P... | Mathlib.RingTheory.JacobsonIdeal.99_0.Lz0MgLQMj1bGzuN | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
x : R
hx : ∀ (y : R), ∃ z, z * y * x + z - 1 ∈ I
M : Ideal R
x✝ : M ∈ {J | I ≤ J ∧ IsMaximal J}
him : I ≤ M
hm : IsMaximal M
hxm : x ∉ M
y i : R
hi : i ∈ M
df : y * x + i = 1
z : R
hz : z * -y * x + z - 1 ∈ I
⊢ z * -y * x + z ∈ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [mul_assoc, ← mul_add_one z, neg_mul, ← sub_eq_iff_eq_add.mpr df.symm, neg_sub,
sub_add_cancel] | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I :=
⟨fun hx y =>
by_cases
(fun hxy : I ⊔ span {y * x + 1} = ⊤ =>
let ⟨p, hpi, q, hq, hpq⟩ := Submodule.mem_sup.1 ((eq_top_iff_one _).1 hxy)
let ⟨r, hr⟩ := mem_span_singleton'.1 hq
⟨r, by
-- P... | Mathlib.RingTheory.JacobsonIdeal.99_0.Lz0MgLQMj1bGzuN | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
x : R
hx : ∀ (y : R), ∃ z, z * y * x + z - 1 ∈ I
M : Ideal R
x✝ : M ∈ {J | I ≤ J ∧ IsMaximal J}
him : I ≤ M
hm : IsMaximal M
hxm : x ∉ M
y i : R
hi : i ∈ M
df : y * x + i = 1
z : R
hz : z * -y * x + z - 1 ∈ I
⊢ z * i ∈ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact M.mul_mem_left _ hi | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I :=
⟨fun hx y =>
by_cases
(fun hxy : I ⊔ span {y * x + 1} = ⊤ =>
let ⟨p, hpi, q, hq, hpq⟩ := Submodule.mem_sup.1 ((eq_top_iff_one _).1 hxy)
let ⟨r, hr⟩ := mem_span_singleton'.1 hq
⟨r, by
-- P... | Mathlib.RingTheory.JacobsonIdeal.99_0.Lz0MgLQMj1bGzuN | theorem mem_jacobson_iff {x : R} : x ∈ jacobson I ↔ ∀ y, ∃ z, z * y * x + z - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ I : Ideal R
r : R
h : r - 1 ∈ jacobson I
⊢ ∃ s, s * r - 1 ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | cases' mem_jacobson_iff.1 h 1 with s hs | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I := by
| Mathlib.RingTheory.JacobsonIdeal.124_0.Lz0MgLQMj1bGzuN | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
case intro
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ I : Ideal R
r : R
h : r - 1 ∈ jacobson I
s : R
hs : s * 1 * (r - 1) + s - 1 ∈ I
⊢ ∃ s, s * r - 1 ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | use s | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I := by
cases' mem_jacobson_iff.1 h 1 with s hs
| Mathlib.RingTheory.JacobsonIdeal.124_0.Lz0MgLQMj1bGzuN | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
case h
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ I : Ideal R
r : R
h : r - 1 ∈ jacobson I
s : R
hs : s * 1 * (r - 1) + s - 1 ∈ I
⊢ s * r - 1 ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | simpa [mul_sub] using hs | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I := by
cases' mem_jacobson_iff.1 h 1 with s hs
use s
| Mathlib.RingTheory.JacobsonIdeal.124_0.Lz0MgLQMj1bGzuN | theorem exists_mul_sub_mem_of_sub_one_mem_jacobson {I : Ideal R} (r : R) (h : r - 1 ∈ jacobson I) :
∃ s, s * r - 1 ∈ I | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
⊢ jacobson I = I ↔ ∃ M, (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | use fun hI => ⟨{ J : Ideal R | I ≤ J ∧ J.IsMaximal }, ⟨fun _ hJ => Or.inl hJ.right, hI.symm⟩⟩ | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
⊢ (∃ M, (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M) → jacobson I = I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rintro ⟨M, hM, hInf⟩ | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I = sInf M
⊢ jacobson I = I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine le_antisymm (fun x hx => ?_) le_jacobson | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I = sInf M
x : R
hx : x ∈ jacobson I
⊢ x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [hInf, mem_sInf] | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I = sInf M
x : R
hx : x ∈ jacobson I
⊢ ∀ ⦃I : Ideal R⦄, I ∈ M → x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | intro I hI | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I✝ = sInf M
x : R
hx : x ∈ jacobson I✝
I : Ideal R
hI : I ∈ M
⊢ x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | cases' hM I hI with is_max is_top | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro.inl
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I✝ = sInf M
x : R
hx : x ∈ jacobson I✝
I : Ideal R
hI : I ∈ M
is_max : IsMaximal I
⊢ x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact (mem_sInf.1 hx) ⟨le_sInf_iff.1 (le_of_eq hInf) I hI, is_max⟩ | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
case mpr.intro.intro.inr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I✝ : Ideal R
M : Set (Ideal R)
hM : ∀ J ∈ M, IsMaximal J ∨ J = ⊤
hInf : I✝ = sInf M
x : R
hx : x ∈ jacobson I✝
I : Ideal R
hI : I ∈ M
is_top : I = ⊤
⊢ x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact is_top.symm ▸ Submodule.mem_top | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M := by... | Mathlib.RingTheory.JacobsonIdeal.131_0.Lz0MgLQMj1bGzuN | /-- An ideal equals its Jacobson radical iff it is the intersection of a set of maximal ideals.
Allowing the set to include ⊤ is equivalent, and is included only to simplify some proofs. -/
theorem eq_jacobson_iff_sInf_maximal :
I.jacobson = I ↔ ∃ M : Set (Ideal R), (∀ J ∈ M, IsMaximal J ∨ J = ⊤) ∧ I = sInf M | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
⊢ jacobson I = I ↔ ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | constructor | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
| Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mp
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
⊢ jacobson I = I → ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | intro h x hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mp
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : jacobson I = I
x : R
hx : x ∉ I
⊢ ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | erw [← h, mem_sInf] at hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
| Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mp
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : jacobson I = I
x : R
hx : ¬∀ ⦃I_1 : Ideal R⦄, I_1 ∈ {J | I ≤ J ∧ IsMaximal J} → x ∈ I_1
⊢ ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | push_neg at hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mp
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : jacobson I = I
x : R
hx : ∃ I_1 ∈ {J | I ≤ J ∧ IsMaximal J}, x ∉ I_1
⊢ ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
⊢ (∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M) → jacobson I = I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine fun h => le_antisymm (fun x hx => ?_) le_jacobson | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M
x : R
hx : x ∈ jacobson I
⊢ x ∈ I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | contrapose hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M
x : R
hx : x ∉ I
⊢ x ∉ jacobson I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | erw [mem_sInf] | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M
x : R
hx : x ∉ I
⊢ ¬∀ ⦃I_1 : Ideal R⦄, I_1 ∈ {J | I ≤ J ∧ IsMaximal J} → x ∈ I_1 | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | push_neg | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
case mpr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
h : ∀ x ∉ I, ∃ M, (I ≤ M ∧ IsMaximal M) ∧ x ∉ M
x : R
hx : x ∉ I
⊢ ∃ I_1 ∈ {J | I ≤ J ∧ IsMaximal J}, x ∉ I_1 | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact h x hx | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M := by
constructor
· intro h x hx
erw [← h, mem_sInf... | Mathlib.RingTheory.JacobsonIdeal.162_0.Lz0MgLQMj1bGzuN | /-- An ideal `I` equals its Jacobson radical if and only if every element outside `I`
also lies outside of a maximal ideal containing `I`. -/
theorem eq_jacobson_iff_not_mem :
I.jacobson = I ↔ ∀ (x) (_ : x ∉ I), ∃ M : Ideal R, (I ≤ M ∧ M.IsMaximal) ∧ x ∉ M | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
⊢ RingHom.ker f ≤ I → map f (jacobson I) = jacobson (map f I) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | intro h | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
| Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
⊢ map f (jacobson I) = jacobson (map f I) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | unfold Ideal.jacobson | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
| Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
⊢ map f (sInf {J | I ≤ J ∧ IsMaximal J}) = sInf {J | map f I ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :=
fun J hJ => le_trans h hJ.left | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
| Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
⊢ map f (sInf {J | I ≤ J ∧ IsMaximal J}) = sInf {J | map f I ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine Trans.trans (map_sInf hf this) (le_antisymm ?_ ?_) | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
⊢ sInf (map f '' {J | I ≤ J ∧ IsMaximal J}) ≤ sInf {J | map f I ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine'
sInf_le_sInf fun J hJ =>
⟨comap f J, ⟨⟨le_comap_of_map_le hJ.1, _⟩, map_comap_of_surjective f hf J⟩⟩ | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
J : Ideal S
hJ : J ∈ {J | map f I ≤ J ∧ IsMaximal J}
⊢ IsMaximal (comap f J) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | haveI : J.IsMaximal := hJ.right | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this✝ : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
J : Ideal S
hJ : J ∈ {J | map f I ≤ J ∧ IsMaximal J}
this : IsMaximal J
⊢ IsMaximal (comap f J) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact comap_isMaximal_of_surjective f hf | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_2
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
⊢ sInf {J | map f I ≤ J ∧ IsMaximal J} ≤ sInf (map f '' {J | I ≤ J ∧ IsMaximal J}) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine' sInf_le_sInf_of_subset_insert_top fun j hj => hj.recOn fun J hJ => _ | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_2
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
j : Ideal S
hj : j ∈ map f '' {J | I ≤ J ∧ IsMaximal J}
J : Ideal R
hJ : J ∈ {J | I ≤ J ∧ IsMaximal J} ∧ map f J = j
⊢ j ... | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [← hJ.2] | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_2
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
j : Ideal S
hj : j ∈ map f '' {J | I ≤ J ∧ IsMaximal J}
J : Ideal R
hJ : J ∈ {J | I ≤ J ∧ IsMaximal J} ∧ map f J = j
⊢ ma... | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | cases' map_eq_top_or_isMaximal_of_surjective f hf hJ.left.right with htop hmax | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_2.inl
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
j : Ideal S
hj : j ∈ map f '' {J | I ≤ J ∧ IsMaximal J}
J : Ideal R
hJ : J ∈ {J | I ≤ J ∧ IsMaximal J} ∧ map f J = j
... | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact htop.symm ▸ Set.mem_insert ⊤ _ | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine_2.inr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
h : RingHom.ker f ≤ I
this : ∀ J ∈ {J | I ≤ J ∧ IsMaximal J}, RingHom.ker f ≤ J
j : Ideal S
hj : j ∈ map f '' {J | I ≤ J ∧ IsMaximal J}
J : Ideal R
hJ : J ∈ {J | I ≤ J ∧ IsMaximal J} ∧ map f J = j
... | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact Set.mem_insert_of_mem ⊤ ⟨map_mono hJ.1.1, hmax⟩ | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson := by
intro h
unfold Ideal.jacobson
-- porting note : dot notation for `RingHom.ker` does not work
have : ∀ J ∈ { J : Ideal R | I ≤ J ∧ J.IsMaximal }, RingHom.ker f ≤ J :... | Mathlib.RingTheory.JacobsonIdeal.178_0.Lz0MgLQMj1bGzuN | theorem map_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) :
RingHom.ker f ≤ I → map f I.jacobson = (map f I).jacobson | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ comap f (jacobson K) = jacobson (comap f K) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | unfold Ideal.jacobson | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
| Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ comap f (sInf {J | K ≤ J ∧ IsMaximal J}) = sInf {J | comap f K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine' le_antisymm _ _ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
| Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ comap f (sInf {J | K ≤ J ∧ IsMaximal J}) ≤ sInf {J | comap f K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ comap f (sInf (insert ⊤ {J | K ≤ J ∧ IsMaximal J})) ≤ sInf {J | comap f K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [comap_sInf', sInf_eq_iInf] | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
| Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ ⨅ I ∈ comap f '' insert ⊤ {J | K ≤ J ∧ IsMaximal J}, I ≤ ⨅ a ∈ {J | comap f K ≤ J ∧ IsMaximal J}, a | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine' iInf_le_iInf_of_subset fun J hJ => _ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
J : Ideal R
hJ : J ∈ {J | comap f K ≤ J ∧ IsMaximal J}
⊢ J ∈ comap f '' insert ⊤ {J | K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | have : comap f (map f J) = J :=
Trans.trans (comap_map_of_surjective f hf J)
(le_antisymm (sup_le_iff.2 ⟨le_of_eq rfl, le_trans (comap_mono bot_le) hJ.left⟩)
le_sup_left) | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
J : Ideal R
hJ : J ∈ {J | comap f K ≤ J ∧ IsMaximal J}
this : comap f (map f J) = J
⊢ J ∈ comap f '' insert ⊤ {J | K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | cases' map_eq_top_or_isMaximal_of_surjective _ hf hJ.right with htop hmax | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1.inl
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
J : Ideal R
hJ : J ∈ {J | comap f K ≤ J ∧ IsMaximal J}
this : comap f (map f J) = J
htop : map f J = ⊤
⊢ J ∈ comap f '' insert ⊤ {J | K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact ⟨⊤, ⟨Set.mem_insert ⊤ _, htop ▸ this⟩⟩ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_1.inr
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
J : Ideal R
hJ : J ∈ {J | comap f K ≤ J ∧ IsMaximal J}
this : comap f (map f J) = J
hmax : IsMaximal (map f J)
⊢ J ∈ comap f '' insert ⊤ {J | K ≤ J ∧ IsMaximal J} | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | exact ⟨map f J, ⟨Set.mem_insert_of_mem _ ⟨le_map_of_comap_le_of_surjective f hf hJ.1, hmax⟩,
this⟩⟩ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_2
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ sInf {J | comap f K ≤ J ∧ IsMaximal J} ≤ comap f (sInf {J | K ≤ J ∧ IsMaximal J}) | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | rw [comap_sInf] | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
case refine'_2
R : Type u
S : Type v
inst✝¹ : Ring R
inst✝ : Ring S
I : Ideal R
f : R →+* S
hf : Function.Surjective ⇑f
K : Ideal S
⊢ sInf {J | comap f K ≤ J ∧ IsMaximal J} ≤ ⨅ I ∈ {J | K ≤ J ∧ IsMaximal J}, comap f I | /-
Copyright (c) 2020 Devon Tuma. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Kenny Lau, Devon Tuma
-/
import Mathlib.RingTheory.Ideal.Quotient
import Mathlib.RingTheory.Polynomial.Quotient
#align_import ring_theory.jacobson_ideal from "leanprover-community/mathlib... | refine' le_iInf_iff.2 fun J => le_iInf_iff.2 fun hJ => _ | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson := by
unfold Ideal.jacobson
refine' le_antisymm _ _
· refine le_trans (comap_mono (le_of_eq (Trans.trans top_inf_eq.symm sInf_insert.symm))) ?_
rw [comap_sInf', sInf_eq... | Mathlib.RingTheory.JacobsonIdeal.209_0.Lz0MgLQMj1bGzuN | theorem comap_jacobson_of_surjective {f : R →+* S} (hf : Function.Surjective f) {K : Ideal S} :
comap f K.jacobson = (comap f K).jacobson | Mathlib_RingTheory_JacobsonIdeal |
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