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 |
|---|---|---|---|---|---|---|
α : Type u
β : Type v
γ : Type w
⊢ atBot ≤ cocompact ℝ | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simp | theorem Real.atBot_le_cocompact : atBot ≤ cocompact ℝ := by | Mathlib.Topology.Instances.Real.82_0.cAejORboOY2cNtK | theorem Real.atBot_le_cocompact : atBot ≤ cocompact ℝ | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
⊢ atTop ≤ cocompact ℝ | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simp | theorem Real.atTop_le_cocompact : atTop ≤ cocompact ℝ := by | Mathlib.Topology.Instances.Real.83_0.cAejORboOY2cNtK | theorem Real.atTop_le_cocompact : atTop ≤ cocompact ℝ | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
s : Set ℝ
x : ℝ
⊢ x ∈ closure s ↔ ∀ ε > 0, ∃ y ∈ s, |y - x| < ε | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simp [mem_closure_iff_nhds_basis nhds_basis_ball, Real.dist_eq] | theorem Real.mem_closure_iff {s : Set ℝ} {x : ℝ} : x ∈ closure s ↔ ∀ ε > 0, ∃ y ∈ s, |y - x| < ε :=
by | Mathlib.Topology.Instances.Real.91_0.cAejORboOY2cNtK | theorem Real.mem_closure_iff {s : Set ℝ} {x : ℝ} : x ∈ closure s ↔ ∀ ε > 0, ∃ y ∈ s, |y - x| < ε | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
⊢ CompleteSpace ℝ | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | apply complete_of_cauchySeq_tendsto | instance : CompleteSpace ℝ := by
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a
α : Type u
β : Type v
γ : Type w
⊢ ∀ (u : ℕ → ℝ), CauchySeq u → ∃ a, Tendsto u atTop (𝓝 a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | intro u hu | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
⊢ ∃ a, Tendsto u atTop (𝓝 a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩ | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
c : CauSeq ℝ abs := { val := u, property := (_ : ∀ ε > 0, ∃ N, ∀ n ≥ N, dist (u n) (u N) < ε) }
⊢ ∃ a, Tendsto u atTop (𝓝 a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | refine' ⟨c.lim, fun s h => _⟩ | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
c : CauSeq ℝ abs := { val := u, property := (_ : ∀ ε > 0, ∃ N, ∀ n ≥ N, dist (u n) (u N) < ε) }
s : Set ℝ
h : s ∈ 𝓝 (CauSeq.lim c)
⊢ s ∈ map u atTop | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rcases Metric.mem_nhds_iff.1 h with ⟨ε, ε0, hε⟩ | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩
refine' ⟨c.lim, fun s h => _⟩
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a.intro.intro
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
c : CauSeq ℝ abs := { val := u, property := (_ : ∀ ε > 0, ∃ N, ∀ n ≥ N, dist (u n) (u N) < ε) }
s : Set ℝ
h : s ∈ 𝓝 (CauSeq.lim c)
ε : ℝ
ε0 : ε > 0
hε : ball (CauSeq.lim c) ε ⊆ s
⊢ s ∈ map u atTop | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | have := c.equiv_lim ε ε0 | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩
refine' ⟨c.lim, fun s h => _⟩
rcases Metric.mem_nhds_iff.1 h with ⟨ε, ε0, hε⟩
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a.intro.intro
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
c : CauSeq ℝ abs := { val := u, property := (_ : ∀ ε > 0, ∃ N, ∀ n ≥ N, dist (u n) (u N) < ε) }
s : Set ℝ
h : s ∈ 𝓝 (CauSeq.lim c)
ε : ℝ
ε0 : ε > 0
hε : ball (CauSeq.lim c) ε ⊆ s
this : ∃ i, ∀ j ≥ i, |↑(c - CauSeq.const abs (CauSeq.lim c)) ... | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simp only [mem_map, mem_atTop_sets, mem_setOf_eq] | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩
refine' ⟨c.lim, fun s h => _⟩
rcases Metric.mem_nhds_iff.1 h with ⟨ε, ε0, hε⟩
have := c.equiv_lim ε ε0
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
case a.intro.intro
α : Type u
β : Type v
γ : Type w
u : ℕ → ℝ
hu : CauchySeq u
c : CauSeq ℝ abs := { val := u, property := (_ : ∀ ε > 0, ∃ N, ∀ n ≥ N, dist (u n) (u N) < ε) }
s : Set ℝ
h : s ∈ 𝓝 (CauSeq.lim c)
ε : ℝ
ε0 : ε > 0
hε : ball (CauSeq.lim c) ε ⊆ s
this : ∃ i, ∀ j ≥ i, |↑(c - CauSeq.const abs (CauSeq.lim c)) ... | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | refine' this.imp fun N hN n hn => hε (hN n hn) | instance : CompleteSpace ℝ := by
apply complete_of_cauchySeq_tendsto
intro u hu
let c : CauSeq ℝ abs := ⟨u, Metric.cauchySeq_iff'.1 hu⟩
refine' ⟨c.lim, fun s h => _⟩
rcases Metric.mem_nhds_iff.1 h with ⟨ε, ε0, hε⟩
have := c.equiv_lim ε ε0
simp only [mem_map, mem_atTop_sets, mem_setOf_eq]
| Mathlib.Topology.Instances.Real.142_0.cAejORboOY2cNtK | instance : CompleteSpace ℝ | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
x ε : ℝ
⊢ TotallyBounded (ball x ε) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [Real.ball_eq_Ioo] | theorem Real.totallyBounded_ball (x ε : ℝ) : TotallyBounded (ball x ε) := by
| Mathlib.Topology.Instances.Real.152_0.cAejORboOY2cNtK | theorem Real.totallyBounded_ball (x ε : ℝ) : TotallyBounded (ball x ε) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
x ε : ℝ
⊢ TotallyBounded (Ioo (x - ε) (x + ε)) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | apply totallyBounded_Ioo | theorem Real.totallyBounded_ball (x ε : ℝ) : TotallyBounded (ball x ε) := by
rw [Real.ball_eq_Ioo]; | Mathlib.Topology.Instances.Real.152_0.cAejORboOY2cNtK | theorem Real.totallyBounded_ball (x ε : ℝ) : TotallyBounded (ball x ε) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
q : ℚ
x : ℝ
hx : x ∈ {r | ↑q ≤ r}
t : Set ℝ
ht : t ∈ 𝓝 x
ε : ℝ
ε0 : ε > 0
hε : ball x ε ⊆ t
p : ℚ
h₁ : x < ↑p
h₂ : ↑p < x + ε
⊢ ↑p ∈ ball x ε | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rwa [mem_ball, Real.dist_eq, abs_of_pos (sub_pos.2 h₁), sub_lt_iff_lt_add'] | theorem closure_of_rat_image_lt {q : ℚ} :
closure (((↑) : ℚ → ℝ) '' { x | q < x }) = { r | ↑q ≤ r } :=
Subset.antisymm
((isClosed_ge' _).closure_subset_iff.2
(image_subset_iff.2 fun p h => le_of_lt <| (@Rat.cast_lt ℝ _ _ _).2 h))
fun x hx => mem_closure_iff_nhds.2 fun t ht =>
let ⟨ε, ε0, hε⟩ :... | Mathlib.Topology.Instances.Real.158_0.cAejORboOY2cNtK | theorem closure_of_rat_image_lt {q : ℚ} :
closure (((↑) : ℚ → ℝ) '' { x | q < x }) = { r | ↑q ≤ r } | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
s : Set ℝ
bdd : IsBounded s
⊢ BddBelow s ∧ BddAbove s | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | obtain ⟨r, hr⟩ : ∃ r : ℝ, s ⊆ Icc (-r) r := by
simpa [Real.closedBall_eq_Icc] using bdd.subset_closedBall 0 | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s :=
⟨fun bdd ↦ by
| Mathlib.Topology.Instances.Real.178_0.cAejORboOY2cNtK | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
s : Set ℝ
bdd : IsBounded s
⊢ ∃ r, s ⊆ Icc (-r) r | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simpa [Real.closedBall_eq_Icc] using bdd.subset_closedBall 0 | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s :=
⟨fun bdd ↦ by
obtain ⟨r, hr⟩ : ∃ r : ℝ, s ⊆ Icc (-r) r := by
| Mathlib.Topology.Instances.Real.178_0.cAejORboOY2cNtK | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s | Mathlib_Topology_Instances_Real |
case intro
α : Type u
β : Type v
γ : Type w
s : Set ℝ
bdd : IsBounded s
r : ℝ
hr : s ⊆ Icc (-r) r
⊢ BddBelow s ∧ BddAbove s | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | exact ⟨bddBelow_Icc.mono hr, bddAbove_Icc.mono hr⟩ | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s :=
⟨fun bdd ↦ by
obtain ⟨r, hr⟩ : ∃ r : ℝ, s ⊆ Icc (-r) r := by
simpa [Real.closedBall_eq_Icc] using bdd.subset_closedBall 0
| Mathlib.Topology.Instances.Real.178_0.cAejORboOY2cNtK | theorem Real.isBounded_iff_bddBelow_bddAbove {s : Set ℝ} : IsBounded s ↔ BddBelow s ∧ BddAbove s | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
inst✝ : TopologicalSpace α
f : ℝ → α
c : ℝ
hp : Periodic f c
hc : c ≠ 0
hf : Continuous f
⊢ IsCompact (range f) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [← hp.image_uIcc hc 0] | /-- A continuous, periodic function has compact range. -/
theorem Periodic.compact_of_continuous [TopologicalSpace α] {f : ℝ → α} {c : ℝ} (hp : Periodic f c)
(hc : c ≠ 0) (hf : Continuous f) : IsCompact (range f) := by
| Mathlib.Topology.Instances.Real.198_0.cAejORboOY2cNtK | /-- A continuous, periodic function has compact range. -/
theorem Periodic.compact_of_continuous [TopologicalSpace α] {f : ℝ → α} {c : ℝ} (hp : Periodic f c)
(hc : c ≠ 0) (hf : Continuous f) : IsCompact (range f) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
inst✝ : TopologicalSpace α
f : ℝ → α
c : ℝ
hp : Periodic f c
hc : c ≠ 0
hf : Continuous f
⊢ IsCompact (f '' [[0, 0 + c]]) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | exact isCompact_uIcc.image hf | /-- A continuous, periodic function has compact range. -/
theorem Periodic.compact_of_continuous [TopologicalSpace α] {f : ℝ → α} {c : ℝ} (hp : Periodic f c)
(hc : c ≠ 0) (hf : Continuous f) : IsCompact (range f) := by
rw [← hp.image_uIcc hc 0]
| Mathlib.Topology.Instances.Real.198_0.cAejORboOY2cNtK | /-- A continuous, periodic function has compact range. -/
theorem Periodic.compact_of_continuous [TopologicalSpace α] {f : ℝ → α} {c : ℝ} (hp : Periodic f c)
(hc : c ≠ 0) (hf : Continuous f) : IsCompact (range f) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
a : ℝ
⊢ DiscreteTopology ↥(AddSubgroup.zmultiples a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rcases eq_or_ne a 0 with (rfl | ha) | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
| Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inl
α : Type u
β : Type v
γ : Type w
⊢ DiscreteTopology ↥(AddSubgroup.zmultiples 0) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [AddSubgroup.zmultiples_zero_eq_bot] | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inl
α : Type u
β : Type v
γ : Type w
⊢ DiscreteTopology ↥⊥ | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | exact Subsingleton.discreteTopology (α := (⊥ : Submodule ℤ ℝ)) | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
| Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inr
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ DiscreteTopology ↥(AddSubgroup.zmultiples a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [discreteTopology_iff_isOpen_singleton_zero, isOpen_induced_iff] | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inr
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ ∃ t, IsOpen t ∧ Subtype.val ⁻¹' t = {0} | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | refine' ⟨ball 0 |a|, isOpen_ball, _⟩ | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inr
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ Subtype.val ⁻¹' ball 0 |a| = {0} | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | ext ⟨x, hx⟩ | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inr.h.mk
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
x : ℝ
hx : x ∈ AddSubgroup.zmultiples a
⊢ { val := x, property := hx } ∈ Subtype.val ⁻¹' ball 0 |a| ↔ { val := x, property := hx } ∈ {0} | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | obtain ⟨k, rfl⟩ := AddSubgroup.mem_zmultiples_iff.mp hx | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
case inr.h.mk.intro
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
k : ℤ
hx : k • a ∈ AddSubgroup.zmultiples a
⊢ { val := k • a, property := hx } ∈ Subtype.val ⁻¹' ball 0 |a| ↔ { val := k • a, property := hx } ∈ {0} | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | simp [ha, Real.dist_eq, abs_mul, (by norm_cast : |(k : ℝ)| < 1 ↔ |k| < 1)] | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
k : ℤ
hx : k • a ∈ AddSubgroup.zmultiples a
⊢ |↑k| < 1 ↔ |k| < 1 | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | norm_cast | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) := by
rcases eq_or_ne a 0 with (rfl | ha)
· rw [AddSubgroup.zmultiples_zero_eq_bot]
exact Subsingleton.discreteTopology (α := (⊥ : S... | Mathlib.Topology.Instances.Real.227_0.cAejORboOY2cNtK | /-- This is a special case of `NormedSpace.discreteTopology_zmultiples`. It exists only to simplify
dependencies. -/
instance {a : ℝ} : DiscreteTopology (AddSubgroup.zmultiples a) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
⊢ Tendsto Int.cast Filter.cofinite (cocompact ℝ) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | apply (castAddHom ℝ).tendsto_coe_cofinite_of_discrete cast_injective | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) := by
| Mathlib.Topology.Instances.Real.239_0.cAejORboOY2cNtK | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
⊢ DiscreteTopology ↥(AddMonoidHom.range (castAddHom ℝ)) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [range_castAddHom] | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) := by
apply (castAddHom ℝ).tendsto_coe_cofinite_of_discrete cast_injective
| Mathlib.Topology.Instances.Real.239_0.cAejORboOY2cNtK | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
⊢ DiscreteTopology ↥(AddSubgroup.zmultiples 1) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | infer_instance | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) := by
apply (castAddHom ℝ).tendsto_coe_cofinite_of_discrete cast_injective
rw [range_castAddHom]
| Mathlib.Topology.Instances.Real.239_0.cAejORboOY2cNtK | /-- Under the coercion from `ℤ` to `ℝ`, inverse images of compact sets are finite. -/
theorem tendsto_coe_cofinite : Tendsto ((↑) : ℤ → ℝ) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ Tendsto (⇑((zmultiplesHom ℝ) a)) Filter.cofinite (cocompact ℝ) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | apply (zmultiplesHom ℝ a).tendsto_coe_cofinite_of_discrete $ smul_left_injective ℤ ha | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) := by
| Mathlib.Topology.Instances.Real.246_0.cAejORboOY2cNtK | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ DiscreteTopology ↥(AddMonoidHom.range ((zmultiplesHom ℝ) a)) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | rw [AddSubgroup.range_zmultiplesHom] | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) := by
apply (zmultiplesHom ℝ a).tendsto_coe_cofinite_of_d... | Mathlib.Topology.Instances.Real.246_0.cAejORboOY2cNtK | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
α : Type u
β : Type v
γ : Type w
a : ℝ
ha : a ≠ 0
⊢ DiscreteTopology ↥(AddSubgroup.zmultiples a) | /-
Copyright (c) 2017 Johannes Hölzl. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Johannes Hölzl, Mario Carneiro
-/
import Mathlib.Topology.Algebra.UniformMulAction
import Mathlib.Topology.Algebra.Star
import Mathlib.Topology.Algebra.Order.Field
import Mathlib.Algeb... | infer_instance | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) := by
apply (zmultiplesHom ℝ a).tendsto_coe_cofinite_of_d... | Mathlib.Topology.Instances.Real.246_0.cAejORboOY2cNtK | /-- For nonzero `a`, the "multiples of `a`" map `zmultiplesHom` from `ℤ` to `ℝ` is discrete, i.e.
inverse images of compact sets are finite. -/
theorem tendsto_zmultiplesHom_cofinite {a : ℝ} (ha : a ≠ 0) :
Tendsto (zmultiplesHom ℝ a) cofinite (cocompact ℝ) | Mathlib_Topology_Instances_Real |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
k : Fin n
⊢ (tail (cons y s)) k = s k | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | simp only [tail_apply, cons_succ] | @[simp]
theorem tail_cons : tail (cons y s) = s :=
ext fun k => by | Mathlib.Data.Finsupp.Fin.54_0.Ry6yGz0hTElIyP3 | @[simp]
theorem tail_cons : tail (cons y s) = s | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
⊢ cons (t 0) (tail t) = t | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | ext a | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t := by
| Mathlib.Data.Finsupp.Fin.59_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t | Mathlib_Data_Finsupp_Fin |
case h
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
⊢ (cons (t 0) (tail t)) a = t a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | by_cases c_a : a = 0 | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t := by
ext a
| Mathlib.Data.Finsupp.Fin.59_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t | Mathlib_Data_Finsupp_Fin |
case pos
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
c_a : a = 0
⊢ (cons (t 0) (tail t)) a = t a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | rw [c_a, cons_zero] | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t := by
ext a
by_cases c_a : a = 0
· | Mathlib.Data.Finsupp.Fin.59_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t | Mathlib_Data_Finsupp_Fin |
case neg
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
c_a : ¬a = 0
⊢ (cons (t 0) (tail t)) a = t a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | rw [← Fin.succ_pred a c_a, cons_succ, ← tail_apply] | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t := by
ext a
by_cases c_a : a = 0
· rw [c_a, cons_zero]
· | Mathlib.Data.Finsupp.Fin.59_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_tail : cons (t 0) (tail t) = t | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
⊢ cons 0 0 = 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | ext a | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 := by
| Mathlib.Data.Finsupp.Fin.67_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 | Mathlib_Data_Finsupp_Fin |
case h
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
⊢ (cons 0 0) a = 0 a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | by_cases c : a = 0 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 := by
ext a
| Mathlib.Data.Finsupp.Fin.67_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 | Mathlib_Data_Finsupp_Fin |
case pos
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
c : a = 0
⊢ (cons 0 0) a = 0 a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | simp [c] | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 := by
ext a
by_cases c : a = 0
· | Mathlib.Data.Finsupp.Fin.67_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 | Mathlib_Data_Finsupp_Fin |
case neg
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
c : ¬a = 0
⊢ (cons 0 0) a = 0 a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | rw [← Fin.succ_pred a c, cons_succ] | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 := by
ext a
by_cases c : a = 0
· simp [c]
· | Mathlib.Data.Finsupp.Fin.67_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 | Mathlib_Data_Finsupp_Fin |
case neg
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
a : Fin (n + 1)
c : ¬a = 0
⊢ 0 (Fin.pred a c) = 0 (Fin.succ (Fin.pred a c)) | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | simp | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 := by
ext a
by_cases c : a = 0
· simp [c]
· rw [← Fin.succ_pred a c, cons_succ]
| Mathlib.Data.Finsupp.Fin.67_0.Ry6yGz0hTElIyP3 | @[simp]
theorem cons_zero_zero : cons 0 (0 : Fin n →₀ M) = 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
h : y ≠ 0
⊢ cons y s ≠ 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | contrapose! h with c | theorem cons_ne_zero_of_left (h : y ≠ 0) : cons y s ≠ 0 := by
| Mathlib.Data.Finsupp.Fin.78_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_of_left (h : y ≠ 0) : cons y s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
c : cons y s = 0
⊢ y = 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | rw [← cons_zero y s, c, Finsupp.coe_zero, Pi.zero_apply] | theorem cons_ne_zero_of_left (h : y ≠ 0) : cons y s ≠ 0 := by
contrapose! h with c
| Mathlib.Data.Finsupp.Fin.78_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_of_left (h : y ≠ 0) : cons y s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
h : s ≠ 0
⊢ cons y s ≠ 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | contrapose! h with c | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 := by
| Mathlib.Data.Finsupp.Fin.83_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
c : cons y s = 0
⊢ s = 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | ext a | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 := by
contrapose! h with c
| Mathlib.Data.Finsupp.Fin.83_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 | Mathlib_Data_Finsupp_Fin |
case h
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
c : cons y s = 0
a : Fin n
⊢ s a = 0 a | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | simp [← cons_succ a y s, c] | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 := by
contrapose! h with c
ext a
| Mathlib.Data.Finsupp.Fin.83_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_of_right (h : s ≠ 0) : cons y s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
⊢ cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | refine' ⟨fun h => _, fun h => h.casesOn cons_ne_zero_of_left cons_ne_zero_of_right⟩ | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 := by
| Mathlib.Data.Finsupp.Fin.89_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
h : cons y s ≠ 0
⊢ y ≠ 0 ∨ s ≠ 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | refine' imp_iff_not_or.1 fun h' c => h _ | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 := by
refine' ⟨fun h => _, fun h => h.casesOn cons_ne_zero_of_left cons_ne_zero_of_right⟩
| Mathlib.Data.Finsupp.Fin.89_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 | Mathlib_Data_Finsupp_Fin |
n : ℕ
i : Fin n
M : Type u_1
inst✝ : Zero M
y : M
t : Fin (n + 1) →₀ M
s : Fin n →₀ M
h : cons y s ≠ 0
h' : y = 0
c : s = 0
⊢ cons y s = 0 | /-
Copyright (c) 2021 Ivan Sadofschi Costa. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Ivan Sadofschi Costa
-/
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
/-!
# `co... | rw [h', c, Finsupp.cons_zero_zero] | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 := by
refine' ⟨fun h => _, fun h => h.casesOn cons_ne_zero_of_left cons_ne_zero_of_right⟩
refine' imp_iff_not_or.1 fun h' c => h _
| Mathlib.Data.Finsupp.Fin.89_0.Ry6yGz0hTElIyP3 | theorem cons_ne_zero_iff : cons y s ≠ 0 ↔ y ≠ 0 ∨ s ≠ 0 | Mathlib_Data_Finsupp_Fin |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
⊢ TFAE
[x ⤳ y, pure x ≤ 𝓝 y, ∀ (s : Set X), IsOpen s → y ∈ s → x ∈... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 1 → 2 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_1_to_2
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
⊢ x ⤳ y → pure x ≤ 𝓝 y | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact (pure_le_nhds _).trans | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
⊢ TFAE
[x ⤳ y, pure x ≤ 𝓝 y, ∀... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 2 → 3 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_2_to_3
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
⊢ pure x ≤ 𝓝 y → ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact fun h s hso hy => h (hso.mem_nhds hy) | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 3 → 4 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_3_to_4
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact fun h s hsc hx => of_not_not fun hy => h sᶜ hsc.isOpen_compl hy hx | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 4 → 5 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_4_to_5
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact fun h => h _ isClosed_closure (subset_closure <| mem_singleton _) | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 6 ↔ 5 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_6_iff_5
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pur... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact isClosed_closure.closure_subset_iff.trans singleton_subset_iff | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 5 ↔ 7 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_5_iff_7
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pur... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rw [mem_closure_iff_clusterPt, principal_singleton] | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_have 5 → 1 | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_5_to_1
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | refine' fun h => (nhds_basis_opens _).ge_iff.2 _ | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_5_to_1
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rintro s ⟨hy, ho⟩ | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_5_to_1.intro
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s✝ : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rcases mem_closure_iff.1 h s ho hy with ⟨z, hxs, rfl : z = x⟩ | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
case tfae_5_to_1.intro.intro.intro
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y✝ z✝ : X
s✝ : Set X
f g : X → Y
y : X
s : Set X
hy : y ∈ s
ho : IsOpen s
z ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact ho.mem_nhds hxs | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
x y : X
tfae_1_to_2 : x ⤳ y → pure x ≤ 𝓝 y
tfae_2_to_3 : pure x ≤ 𝓝 y → ∀ (s ... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | tfae_finish | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib.Topology.Inseparable.67_0.2NeLzt0mQ64QlfB | /-- A collection of equivalent definitions of `x ⤳ y`. The public API is given by `iff` lemmas
below. -/
theorem specializes_TFAE (x y : X) :
TFAE [x ⤳ y,
pure x ≤ 𝓝 y,
∀ s : Set X , IsOpen s → y ∈ s → x ∈ s,
∀ s : Set X , IsClosed s → x ∈ s → y ∈ s,
y ∈ closure ({ x } : Set X),
closu... | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ ker (𝓝 x) = {y | y ⤳ x} | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | ext | theorem ker_nhds_eq_specializes : (𝓝 x).ker = {y | y ⤳ x} := by
| Mathlib.Topology.Inseparable.111_0.2NeLzt0mQ64QlfB | theorem ker_nhds_eq_specializes : (𝓝 x).ker = {y | y ⤳ x} | Mathlib_Topology_Inseparable |
case h
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
x✝ : X
⊢ x✝ ∈ ker (𝓝 x) ↔ x✝ ∈ {y | y ⤳ x} | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp [specializes_iff_pure, le_def] | theorem ker_nhds_eq_specializes : (𝓝 x).ker = {y | y ⤳ x} := by
ext; | Mathlib.Topology.Inseparable.111_0.2NeLzt0mQ64QlfB | theorem ker_nhds_eq_specializes : (𝓝 x).ker = {y | y ⤳ x} | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
hf : Inducing f
⊢ f x ⤳ f y ↔ x ⤳ y | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [specializes_iff_mem_closure, hf.closure_eq_preimage_closure_image, image_singleton,
mem_preimage] | theorem Inducing.specializes_iff (hf : Inducing f) : f x ⤳ f y ↔ x ⤳ y := by
| Mathlib.Topology.Inseparable.195_0.2NeLzt0mQ64QlfB | theorem Inducing.specializes_iff (hf : Inducing f) : f x ⤳ f y ↔ x ⤳ y | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
x₁ x₂ : X
y₁ y₂ : Y
⊢ (x₁, y₁) ⤳ (x₂, y₂) ↔ x₁ ⤳ x₂ ∧ y₁ ⤳ y₂ | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [Specializes, nhds_prod_eq, prod_le_prod] | @[simp]
theorem specializes_prod {x₁ x₂ : X} {y₁ y₂ : Y} : (x₁, y₁) ⤳ (x₂, y₂) ↔ x₁ ⤳ x₂ ∧ y₁ ⤳ y₂ := by
| Mathlib.Topology.Inseparable.204_0.2NeLzt0mQ64QlfB | @[simp]
theorem specializes_prod {x₁ x₂ : X} {y₁ y₂ : Y} : (x₁, y₁) ⤳ (x₂, y₂) ↔ x₁ ⤳ x₂ ∧ y₁ ⤳ y₂ | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f✝ g✝ : X → Y
f g : (i : ι) → π i
⊢ f ⤳ g ↔ ∀ (i : ι), f i ⤳ g i | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [Specializes, nhds_pi, pi_le_pi] | @[simp]
theorem specializes_pi {f g : ∀ i, π i} : f ⤳ g ↔ ∀ i, f i ⤳ g i := by
| Mathlib.Topology.Inseparable.214_0.2NeLzt0mQ64QlfB | @[simp]
theorem specializes_pi {f g : ∀ i, π i} : f ⤳ g ↔ ∀ i, f i ⤳ g i | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ ¬x ⤳ y ↔ ∃ S, IsOpen S ∧ y ∈ S ∧ x ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rw [specializes_iff_forall_open] | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S := by
| Mathlib.Topology.Inseparable.219_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (¬∀ (s : Set X), IsOpen s → y ∈ s → x ∈ s) ↔ ∃ S, IsOpen S ∧ y ∈ S ∧ x ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | push_neg | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S := by
rw [specializes_iff_forall_open]
| Mathlib.Topology.Inseparable.219_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (∃ s, IsOpen s ∧ y ∈ s ∧ x ∉ s) ↔ ∃ S, IsOpen S ∧ y ∈ S ∧ x ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rfl | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S := by
rw [specializes_iff_forall_open]
push_neg
| Mathlib.Topology.Inseparable.219_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_open : ¬x ⤳ y ↔ ∃ S : Set X, IsOpen S ∧ y ∈ S ∧ x ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ ¬x ⤳ y ↔ ∃ S, IsClosed S ∧ x ∈ S ∧ y ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rw [specializes_iff_forall_closed] | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S := by
| Mathlib.Topology.Inseparable.225_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (¬∀ (s : Set X), IsClosed s → x ∈ s → y ∈ s) ↔ ∃ S, IsClosed S ∧ x ∈ S ∧ y ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | push_neg | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S := by
rw [specializes_iff_forall_closed]
| Mathlib.Topology.Inseparable.225_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (∃ s, IsClosed s ∧ x ∈ s ∧ y ∉ s) ↔ ∃ S, IsClosed S ∧ x ∈ S ∧ y ∉ S | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rfl | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S := by
rw [specializes_iff_forall_closed]
push_neg
| Mathlib.Topology.Inseparable.225_0.2NeLzt0mQ64QlfB | theorem not_specializes_iff_exists_closed : ¬x ⤳ y ↔ ∃ S : Set X, IsClosed S ∧ x ∈ S ∧ y ∉ S | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsOpen s
hf : Continuous f
hg : Contin... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | have : ∀ U, IsOpen U → g ⁻¹' U ⊆ f ⁻¹' U := fun U hU x hx ↦ (hspec x).mem_open hU hx | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) := by
| Mathlib.Topology.Inseparable.231_0.2NeLzt0mQ64QlfB | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsOpen s
hf : Continuous f
hg : Contin... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rw [continuous_def] | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) := by
have : ∀ U, IsOpen U → g ⁻¹' U ⊆ f ⁻¹' U := fun U hU x hx ↦ (hspec x).mem_open hU hx
| Mathlib.Topology.Inseparable.231_0.2NeLzt0mQ64QlfB | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsOpen s
hf : Continuous f
hg : Contin... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | intro U hU | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) := by
have : ∀ U, IsOpen U → g ⁻¹' U ⊆ f ⁻¹' U := fun U hU x hx ↦ (hspec x).mem_open hU hx
rw [continuous_def]
| Mathlib.Topology.Inseparable.231_0.2NeLzt0mQ64QlfB | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsOpen s
hf : Continuous f
hg : Contin... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rw [piecewise_preimage, ite_eq_of_subset_right _ (this U hU)] | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) := by
have : ∀ U, IsOpen U → g ⁻¹' U ⊆ f ⁻¹' U := fun U hU x hx ↦ (hspec x).mem_open hU hx
rw [continuous_def]
intro U ... | Mathlib.Topology.Inseparable.231_0.2NeLzt0mQ64QlfB | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsOpen s
hf : Continuous f
hg : Contin... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact hU.preimage hf |>.inter hs |>.union (hU.preimage hg) | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) := by
have : ∀ U, IsOpen U → g ⁻¹' U ⊆ f ⁻¹' U := fun U hU x hx ↦ (hspec x).mem_open hU hx
rw [continuous_def]
intro U ... | Mathlib.Topology.Inseparable.231_0.2NeLzt0mQ64QlfB | theorem IsOpen.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsOpen s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, f x ⤳ g x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝⁴ : TopologicalSpace X
inst✝³ : TopologicalSpace Y
inst✝² : TopologicalSpace Z
inst✝¹ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
inst✝ : DecidablePred fun x => x ∈ s
hs : IsClosed s
hf : Continuous f
hg : Cont... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simpa only [piecewise_compl] using hs.isOpen_compl.continuous_piecewise_of_specializes hg hf hspec | theorem IsClosed.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsClosed s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, g x ⤳ f x) :
Continuous (s.piecewise f g) := by
| Mathlib.Topology.Inseparable.240_0.2NeLzt0mQ64QlfB | theorem IsClosed.continuous_piecewise_of_specializes [DecidablePred (· ∈ s)] (hs : IsClosed s)
(hf : Continuous f) (hg : Continuous g) (hspec : ∀ x, g x ⤳ f x) :
Continuous (s.piecewise f g) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (x ~ᵢ y) ↔ ∀ (s : Set X), IsOpen s → (x ∈ s ↔ y ∈ s) | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [inseparable_iff_specializes_and, specializes_iff_forall_open, ← forall_and, ← iff_def,
Iff.comm] | theorem inseparable_iff_forall_open : (x ~ᵢ y) ↔ ∀ s : Set X, IsOpen s → (x ∈ s ↔ y ∈ s) := by
| Mathlib.Topology.Inseparable.299_0.2NeLzt0mQ64QlfB | theorem inseparable_iff_forall_open : (x ~ᵢ y) ↔ ∀ s : Set X, IsOpen s → (x ∈ s ↔ y ∈ s) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ ¬(x ~ᵢ y) ↔ ∃ s, IsOpen s ∧ Xor' (x ∈ s) (y ∈ s) | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp [inseparable_iff_forall_open, ← xor_iff_not_iff] | theorem not_inseparable_iff_exists_open :
¬(x ~ᵢ y) ↔ ∃ s : Set X, IsOpen s ∧ Xor' (x ∈ s) (y ∈ s) := by
| Mathlib.Topology.Inseparable.304_0.2NeLzt0mQ64QlfB | theorem not_inseparable_iff_exists_open :
¬(x ~ᵢ y) ↔ ∃ s : Set X, IsOpen s ∧ Xor' (x ∈ s) (y ∈ s) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (x ~ᵢ y) ↔ ∀ (s : Set X), IsClosed s → (x ∈ s ↔ y ∈ s) | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [inseparable_iff_specializes_and, specializes_iff_forall_closed, ← forall_and, ←
iff_def] | theorem inseparable_iff_forall_closed : (x ~ᵢ y) ↔ ∀ s : Set X, IsClosed s → (x ∈ s ↔ y ∈ s) := by
| Mathlib.Topology.Inseparable.309_0.2NeLzt0mQ64QlfB | theorem inseparable_iff_forall_closed : (x ~ᵢ y) ↔ ∀ s : Set X, IsClosed s → (x ∈ s ↔ y ∈ s) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ x ⤳ y ∧ y ⤳ x ↔ x ∈ closure {y} ∧ y ∈ closure {x} | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [specializes_iff_mem_closure, and_comm] | theorem inseparable_iff_mem_closure :
(x ~ᵢ y) ↔ x ∈ closure ({y} : Set X) ∧ y ∈ closure ({x} : Set X) :=
inseparable_iff_specializes_and.trans <| by | Mathlib.Topology.Inseparable.314_0.2NeLzt0mQ64QlfB | theorem inseparable_iff_mem_closure :
(x ~ᵢ y) ↔ x ∈ closure ({y} : Set X) ∧ y ∈ closure ({x} : Set X) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
⊢ (x ~ᵢ y) ↔ closure {x} = closure {y} | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [inseparable_iff_specializes_and, specializes_iff_closure_subset, ← subset_antisymm_iff,
eq_comm] | theorem inseparable_iff_closure_eq : (x ~ᵢ y) ↔ closure ({x} : Set X) = closure {y} := by
| Mathlib.Topology.Inseparable.319_0.2NeLzt0mQ64QlfB | theorem inseparable_iff_closure_eq : (x ~ᵢ y) ↔ closure ({x} : Set X) = closure {y} | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
hf : Inducing f
⊢ (f x ~ᵢ f y) ↔ (x ~ᵢ y) | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [inseparable_iff_specializes_and, hf.specializes_iff] | theorem Inducing.inseparable_iff (hf : Inducing f) : (f x ~ᵢ f y) ↔ (x ~ᵢ y) := by
| Mathlib.Topology.Inseparable.328_0.2NeLzt0mQ64QlfB | theorem Inducing.inseparable_iff (hf : Inducing f) : (f x ~ᵢ f y) ↔ (x ~ᵢ y) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
x₁ x₂ : X
y₁ y₂ : Y
⊢ ((x₁, y₁) ~ᵢ (x₂, y₂)) ↔ (x₁ ~ᵢ x₂) ∧ (y₁ ~ᵢ y₂) | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [Inseparable, nhds_prod_eq, prod_inj] | @[simp] theorem inseparable_prod {x₁ x₂ : X} {y₁ y₂ : Y} :
((x₁, y₁) ~ᵢ (x₂, y₂)) ↔ (x₁ ~ᵢ x₂) ∧ (y₁ ~ᵢ y₂) := by
| Mathlib.Topology.Inseparable.336_0.2NeLzt0mQ64QlfB | @[simp] theorem inseparable_prod {x₁ x₂ : X} {y₁ y₂ : Y} :
((x₁, y₁) ~ᵢ (x₂, y₂)) ↔ (x₁ ~ᵢ x₂) ∧ (y₁ ~ᵢ y₂) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f✝ g✝ : X → Y
f g : (i : ι) → π i
⊢ (f ~ᵢ g) ↔ ∀ (i : ι), f i ~ᵢ g i | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | simp only [Inseparable, nhds_pi, funext_iff, pi_inj] | @[simp]
theorem inseparable_pi {f g : ∀ i, π i} : (f ~ᵢ g) ↔ ∀ i, f i ~ᵢ g i := by
| Mathlib.Topology.Inseparable.346_0.2NeLzt0mQ64QlfB | @[simp]
theorem inseparable_pi {f g : ∀ i, π i} : (f ~ᵢ g) ↔ ∀ i, f i ~ᵢ g i | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
t : Set (SeparationQuotient X)
hs : IsOpen s
⊢ mk ⁻¹' (mk '' s) = s | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | refine' Subset.antisymm _ (subset_preimage_image _ _) | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s := by
| Mathlib.Topology.Inseparable.464_0.2NeLzt0mQ64QlfB | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
t : Set (SeparationQuotient X)
hs : IsOpen s
⊢ mk ⁻¹' (mk '' s) ⊆ s | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rintro x ⟨y, hys, hxy⟩ | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s := by
refine' Subset.antisymm _ (subset_preimage_image _ _)
| Mathlib.Topology.Inseparable.464_0.2NeLzt0mQ64QlfB | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s | Mathlib_Topology_Inseparable |
case intro.intro
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x✝ y✝ z : X
s : Set X
f g : X → Y
t : Set (SeparationQuotient X)
hs : IsOpen s
x y : X
hys : y ∈... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | exact ((mk_eq_mk.1 hxy).mem_open_iff hs).1 hys | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s := by
refine' Subset.antisymm _ (subset_preimage_image _ _)
rintro x ⟨y, hys, hxy⟩
| Mathlib.Topology.Inseparable.464_0.2NeLzt0mQ64QlfB | theorem preimage_image_mk_open (hs : IsOpen s) : mk ⁻¹' (mk '' s) = s | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s✝ : Set X
f g : X → Y
t : Set (SeparationQuotient X)
s : Set X
hs : IsOpen s
⊢ IsOpen (mk ⁻¹' (mk '' s... | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | rwa [preimage_image_mk_open hs] | theorem isOpenMap_mk : IsOpenMap (mk : X → SeparationQuotient X) := fun s hs =>
quotientMap_mk.isOpen_preimage.1 <| by | Mathlib.Topology.Inseparable.470_0.2NeLzt0mQ64QlfB | theorem isOpenMap_mk : IsOpenMap (mk : X → SeparationQuotient X) | Mathlib_Topology_Inseparable |
X : Type u_1
Y : Type u_2
Z : Type u_3
α : Type u_4
ι : Type u_5
π : ι → Type u_6
inst✝³ : TopologicalSpace X
inst✝² : TopologicalSpace Y
inst✝¹ : TopologicalSpace Z
inst✝ : (i : ι) → TopologicalSpace (π i)
x y z : X
s : Set X
f g : X → Y
t : Set (SeparationQuotient X)
hs : IsClosed s
⊢ mk ⁻¹' (mk '' s) = s | /-
Copyright (c) 2021 Andrew Yang. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Andrew Yang, Yury G. Kudryashov
-/
import Mathlib.Tactic.TFAE
import Mathlib.Topology.ContinuousOn
#align_import topology.inseparable from "leanprover-community/mathlib"@"bcfa726826abd57... | refine' Subset.antisymm _ (subset_preimage_image _ _) | theorem preimage_image_mk_closed (hs : IsClosed s) : mk ⁻¹' (mk '' s) = s := by
| Mathlib.Topology.Inseparable.474_0.2NeLzt0mQ64QlfB | theorem preimage_image_mk_closed (hs : IsClosed s) : mk ⁻¹' (mk '' s) = s | Mathlib_Topology_Inseparable |
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