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Mathlib/Analysis/SpecialFunctions/Trigonometric/Basic.lean
Complex.sin_pi_div_two_sub
[ { "state_after": "no goals", "state_before": "x : ℂ\n⊢ sin (↑π / 2 - x) = cos x", "tactic": "simp [sub_eq_add_neg, sin_add]" } ]
[ 1285, 98 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1285, 1 ]
Mathlib/Topology/Constructions.lean
continuous_swap
[]
[ 489, 40 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 488, 1 ]
Mathlib/CategoryTheory/Bicategory/Basic.lean
CategoryTheory.Bicategory.associator_naturality_right
[ { "state_after": "no goals", "state_before": "B : Type u\ninst✝ : Bicategory B\na b c d e : B\nf : a ⟶ b\ng : b ⟶ c\nh h' : c ⟶ d\nη : h ⟶ h'\n⊢ (f ≫ g) ◁ η ≫ (α_ f g h').hom = (α_ f g h).hom ≫ f ◁ g ◁ η", "tactic": "simp" } ]
[ 375, 74 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 374, 1 ]
Mathlib/CategoryTheory/Sums/Associator.lean
CategoryTheory.sum.associator_obj_inl_inr
[]
[ 56, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 55, 1 ]
Mathlib/MeasureTheory/Function/AEEqFun.lean
MeasureTheory.AEEqFun.ext_iff
[ { "state_after": "no goals", "state_before": "α : Type u_1\nβ : Type u_2\nγ : Type ?u.309500\nδ : Type ?u.309503\ninst✝³ : MeasurableSpace α\nμ ν : Measure α\ninst✝² : TopologicalSpace β\ninst✝¹ : TopologicalSpace γ\ninst✝ : TopologicalSpace δ\nf g : α →ₘ[μ] β\nh : f = g\n⊢ ↑f =ᵐ[μ] ↑g", "tactic": "rw [...
[ 180, 39 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 179, 1 ]
Mathlib/CategoryTheory/Limits/Shapes/Kernels.lean
CategoryTheory.Limits.cokernel_map_comp_cokernelComparison
[ { "state_after": "no goals", "state_before": "C : Type u\ninst✝⁸ : Category C\ninst✝⁷ : HasZeroMorphisms C\nX Y : C\nf : X ⟶ Y\nD : Type u₂\ninst✝⁶ : Category D\ninst✝⁵ : HasZeroMorphisms D\nG : C ⥤ D\ninst✝⁴ : Functor.PreservesZeroMorphisms G\nX' Y' : C\ninst✝³ : HasCokernel f\ninst✝² : HasCokernel (G.map ...
[ 1159, 77 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1151, 1 ]
Mathlib/Analysis/NormedSpace/QuaternionExponential.lean
Quaternion.normSq_exp
[ { "state_after": "no goals", "state_before": "q : ℍ\n⊢ ↑normSq (exp ℝ q) = ↑normSq (exp ℝ q.re • (↑(Real.cos ‖im q‖) + (Real.sin ‖im q‖ / ‖im q‖) • im q))", "tactic": "rw [exp_eq]" }, { "state_after": "no goals", "state_before": "q : ℍ\n⊢ ↑normSq (exp ℝ q.re • (↑(Real.cos ‖im q‖) + (Real.sin...
[ 133, 66 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 119, 1 ]
Mathlib/Algebra/BigOperators/Finsupp.lean
Finsupp.prod_neg_index
[]
[ 298, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 296, 1 ]
Mathlib/Analysis/Asymptotics/Asymptotics.lean
Asymptotics.isBigOWith_neg_right
[ { "state_after": "no goals", "state_before": "α : Type u_1\nβ : Type ?u.130316\nE : Type u_2\nF : Type ?u.130322\nG : Type ?u.130325\nE' : Type ?u.130328\nF' : Type u_3\nG' : Type ?u.130334\nE'' : Type ?u.130337\nF'' : Type ?u.130340\nG'' : Type ?u.130343\nR : Type ?u.130346\nR' : Type ?u.130349\n𝕜 : Type ...
[ 864, 39 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 863, 1 ]
Mathlib/Data/Real/ENNReal.lean
ENNReal.toNNReal_div
[ { "state_after": "no goals", "state_before": "α : Type ?u.836623\nβ : Type ?u.836626\na✝ b✝ c d : ℝ≥0∞\nr p q : ℝ≥0\na b : ℝ≥0∞\n⊢ ENNReal.toNNReal (a / b) = ENNReal.toNNReal a / ENNReal.toNNReal b", "tactic": "rw [div_eq_mul_inv, toNNReal_mul, toNNReal_inv, div_eq_mul_inv]" } ]
[ 2318, 66 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2317, 1 ]
Std/Classes/LawfulMonad.lean
SatisfiesM.seq_post
[]
[ 136, 46 ]
e68aa8f5fe47aad78987df45f99094afbcb5e936
https://github.com/leanprover/std4
[ 133, 11 ]
Mathlib/SetTheory/Cardinal/Cofinality.lean
Ordinal.IsFundamentalSequence.ord_cof
[ { "state_after": "no goals", "state_before": "α : Type ?u.68576\nr : α → α → Prop\na o : Ordinal\nf : (b : Ordinal) → b < o → Ordinal\nhf : IsFundamentalSequence a o f\ni : Ordinal\nhi : i < ord (cof a)\n⊢ ord (cof a) ≤ o", "tactic": "rw [hf.cof_eq]" }, { "state_after": "α : Type ?u.68576\nr : α...
[ 575, 11 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 571, 1 ]
Mathlib/Algebra/GCDMonoid/Basic.lean
gcd_dvd_gcd_mul_left_right
[]
[ 492, 41 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 491, 1 ]
Mathlib/MeasureTheory/Measure/MeasureSpace.lean
MeasureTheory.Measure.AbsolutelyContinuous.ae_eq
[]
[ 2427, 13 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2426, 1 ]
Mathlib/Data/PFunctor/Univariate/M.lean
PFunctor.M.ext_aux
[ { "state_after": "case zero\nF : PFunctor\nX : Type ?u.30265\nf : X → Obj F X\ninst✝¹ : Inhabited (M F)\ninst✝ : DecidableEq F.A\nn : ℕ\nx✝ y✝ z✝ : M F\nhx✝ : Agree' n z✝ x✝\nhy✝ : Agree' n z✝ y✝\nhrec✝ : ∀ (ps : Path F), n = length ps → iselect ps x✝ = iselect ps y✝\nx y z : M F\nhx : Agree' zero z x\nhy : Agr...
[ 623, 15 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 590, 1 ]
Mathlib/Data/IsROrC/Basic.lean
IsROrC.normSq_sub
[ { "state_after": "no goals", "state_before": "K : Type u_1\nE : Type ?u.5157046\ninst✝ : IsROrC K\nz w : K\n⊢ ↑normSq (z - w) = ↑normSq z + ↑normSq w - 2 * ↑re (z * ↑(starRingEnd K) w)", "tactic": "simp only [normSq_add, sub_eq_add_neg, map_neg, mul_neg, normSq_neg, map_neg]" } ]
[ 532, 80 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 531, 1 ]
Mathlib/Topology/Algebra/InfiniteSum/Basic.lean
summable_iff_vanishing
[ { "state_after": "no goals", "state_before": "α : Type u_1\nβ : Type u_2\nγ : Type ?u.690029\nδ : Type ?u.690032\ninst✝³ : AddCommGroup α\ninst✝² : UniformSpace α\ninst✝¹ : UniformAddGroup α\nf g : β → α\na a₁ a₂ : α\ninst✝ : CompleteSpace α\n⊢ Summable f ↔ ∀ (e : Set α), e ∈ 𝓝 0 → ∃ s, ∀ (t : Finset β), D...
[ 1152, 69 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1150, 1 ]
Mathlib/Data/Finset/Pointwise.lean
Finset.coeMonoidHom_apply
[]
[ 842, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 841, 1 ]
Mathlib/SetTheory/Cardinal/Cofinality.lean
Cardinal.isStrongLimit_aleph0
[ { "state_after": "case intro\nα : Type ?u.113582\nr : α → α → Prop\nn : ℕ\nhx : ↑n < ℵ₀\n⊢ 2 ^ ↑n < ℵ₀", "state_before": "α : Type ?u.113582\nr : α → α → Prop\nx : Cardinal\nhx : x < ℵ₀\n⊢ 2 ^ x < ℵ₀", "tactic": "rcases lt_aleph0.1 hx with ⟨n, rfl⟩" }, { "state_after": "no goals", "state_bef...
[ 874, 42 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 871, 1 ]
Mathlib/LinearAlgebra/Matrix/Reindex.lean
Matrix.reindexLinearEquiv_symm
[]
[ 61, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 59, 1 ]
Mathlib/MeasureTheory/Group/Prod.lean
MeasureTheory.measurePreserving_prod_div
[]
[ 399, 85 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 397, 1 ]
Mathlib/NumberTheory/Zsqrtd/Basic.lean
Zsqrtd.neg_re
[]
[ 160, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 159, 1 ]
Mathlib/Analysis/Analytic/Basic.lean
AnalyticOn.mono
[]
[ 591, 28 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 590, 1 ]
Mathlib/LinearAlgebra/StdBasis.lean
LinearMap.stdBasis_apply
[]
[ 56, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 55, 1 ]
Mathlib/Logic/Equiv/Defs.lean
Equiv.surjective_comp
[]
[ 375, 32 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 374, 1 ]
Mathlib/Data/Set/Basic.lean
Set.diff_diff_right_self
[]
[ 2070, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2069, 1 ]
Mathlib/Algebra/Hom/Group.lean
MonoidHom.copy_eq
[]
[ 875, 17 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 873, 1 ]
Mathlib/Data/Polynomial/Basic.lean
Polynomial.erase_monomial
[ { "state_after": "no goals", "state_before": "R : Type u\na✝ b : R\nm n✝ : ℕ\ninst✝ : Semiring R\np q : R[X]\nn : ℕ\na : R\n⊢ (erase n (↑(monomial n) a)).toFinsupp = 0.toFinsupp", "tactic": "simp" } ]
[ 1063, 33 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1062, 1 ]
Mathlib/Order/WithBot.lean
IsMax.withBot
[]
[ 247, 66 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 245, 11 ]
Mathlib/Analysis/SpecialFunctions/Trigonometric/Deriv.lean
DifferentiableOn.cosh
[]
[ 1082, 80 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1081, 1 ]
Mathlib/GroupTheory/Perm/Cycle/Basic.lean
Set.prod_self_eq_iUnion_perm
[ { "state_after": "case h.mk\nι : Type ?u.3084179\nα : Type u_1\nβ : Type ?u.3084185\ninst✝ : DecidableEq α\nf : Perm α\ns : Set α\nhf : IsCycleOn f s\na b : α\n⊢ (a, b) ∈ s ×ˢ s ↔ (a, b) ∈ ⋃ (n : ℤ), (fun a => (a, ↑(f ^ n) a)) '' s", "state_before": "ι : Type ?u.3084179\nα : Type u_1\nβ : Type ?u.3084185\ni...
[ 1917, 45 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1909, 1 ]
Mathlib/Data/Dfinsupp/Basic.lean
Dfinsupp.update_eq_erase_add_single
[ { "state_after": "case h\nι : Type u\nγ : Type w\nβ✝ : ι → Type v\nβ₁ : ι → Type v₁\nβ₂ : ι → Type v₂\ndec : DecidableEq ι\ninst✝¹ : (i : ι) → Zero (β✝ i)\ns : Finset ι\nx : (i : ↑↑s) → β✝ ↑i\ni✝ : ι\nf✝ : Π₀ (i : ι), β✝ i\nb✝ : β✝ i✝\nj✝ : ι\nβ : ι → Type u_1\ninst✝ : (i : ι) → AddZeroClass (β i)\nf : Π₀ (i : ...
[ 862, 61 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 857, 1 ]
Mathlib/RingTheory/HahnSeries.lean
HahnSeries.SummableFamily.coe_neg
[]
[ 1550, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1549, 1 ]
Mathlib/Order/Monotone/Odd.lean
strictMono_of_odd_strictMonoOn_nonneg
[ { "state_after": "G : Type u_2\nH : Type u_1\ninst✝¹ : LinearOrderedAddCommGroup G\ninst✝ : OrderedAddCommGroup H\nf : G → H\nh₁ : ∀ (x : G), f (-x) = -f x\nh₂ : StrictMonoOn f (Ici 0)\nx : G\nhx : x ∈ Iic 0\ny : G\nhy : y ∈ Iic 0\nhxy : x < y\n⊢ -f y < -f x", "state_before": "G : Type u_2\nH : Type u_1\nin...
[ 33, 64 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 29, 1 ]
Mathlib/Topology/ContinuousFunction/Basic.lean
ContinuousMap.comp_assoc
[]
[ 252, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 250, 1 ]
Mathlib/Data/Nat/Interval.lean
Nat.Icc_pred_right
[ { "state_after": "case a\na b✝ c b : ℕ\nh : 0 < b\nx : ℕ\n⊢ x ∈ Icc a (b - 1) ↔ x ∈ Ico a b", "state_before": "a b✝ c b : ℕ\nh : 0 < b\n⊢ Icc a (b - 1) = Ico a b", "tactic": "ext x" }, { "state_after": "no goals", "state_before": "case a\na b✝ c b : ℕ\nh : 0 < b\nx : ℕ\n⊢ x ∈ Icc a (b - 1) ↔...
[ 177, 42 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 175, 1 ]
Mathlib/Topology/MetricSpace/IsometricSMul.lean
dist_mul_right
[]
[ 374, 35 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 372, 1 ]
Mathlib/Analysis/Convex/Side.lean
AffineEquiv.sOppSide_map_iff
[]
[ 141, 76 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 139, 1 ]
Mathlib/FieldTheory/MvPolynomial.lean
MvPolynomial.rank_mvPolynomial
[ { "state_after": "no goals", "state_before": "σ K : Type u\ninst✝ : Field K\n⊢ Module.rank K (MvPolynomial σ K) = Cardinal.mk (σ →₀ ℕ)", "tactic": "rw [← Cardinal.lift_inj, ← (basisMonomials σ K).mk_eq_rank]" } ]
[ 62, 62 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 61, 1 ]
Mathlib/Data/Real/EReal.lean
EReal.coe_neg'
[]
[ 403, 23 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 402, 11 ]
Mathlib/Data/Set/Pointwise/Interval.lean
Set.preimage_add_const_Ioi
[]
[ 94, 39 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 93, 1 ]
Mathlib/Algebra/Order/Monoid/Lemmas.lean
mul_le_of_le_one_left'
[]
[ 364, 23 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 360, 1 ]
Mathlib/Order/PartialSups.lean
ciSup_partialSups_eq
[ { "state_after": "case refine'_1\nα : Type u_1\ninst✝ : ConditionallyCompleteLattice α\nf : ℕ → α\nh : BddAbove (Set.range f)\nn : ℕ\n⊢ ↑(partialSups f) n ≤ ⨆ (n : ℕ), f n\n\ncase refine'_2\nα : Type u_1\ninst✝ : ConditionallyCompleteLattice α\nf : ℕ → α\nh : BddAbove (Set.range f)\n⊢ BddAbove (Set.range fun n ...
[ 167, 37 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 162, 1 ]
Mathlib/Combinatorics/Composition.lean
Composition.ones_length
[]
[ 499, 28 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 498, 1 ]
Mathlib/Data/Finset/LocallyFinite.lean
Finset.Ico_filter_lt_of_le_left
[]
[ 317, 70 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 315, 1 ]
Mathlib/Analysis/Convex/Strict.lean
strictConvex_Iio
[]
[ 181, 32 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 180, 1 ]
Mathlib/Topology/Separation.lean
disjoint_nhds_nhdsSet
[]
[ 1528, 44 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1527, 1 ]
Mathlib/Data/Set/Lattice.lean
Set.union_distrib_iInter_left
[]
[ 1398, 18 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1397, 1 ]
Mathlib/Data/List/Cycle.lean
List.isRotated_prev_eq
[ { "state_after": "α : Type u_1\ninst✝ : DecidableEq α\nl✝ : List α\nx✝ : α\nl l' : List α\nh : l ~r l'\nhn : Nodup l\nx : α\nhx : x ∈ l\n⊢ next (reverse l) x (_ : x ∈ reverse l) = next (reverse l') x (_ : x ∈ reverse l')", "state_before": "α : Type u_1\ninst✝ : DecidableEq α\nl✝ : List α\nx✝ : α\nl l' : Lis...
[ 440, 61 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 437, 1 ]
Mathlib/Topology/Algebra/Order/LiminfLimsup.lean
le_nhds_of_limsSup_eq_limsInf
[]
[ 157, 61 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 154, 1 ]
Mathlib/Algebra/GroupWithZero/Divisibility.lean
mul_dvd_mul_iff_right
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝ : CancelCommMonoidWithZero α\na b c : α\nhc : c ≠ 0\nd : α\n⊢ b * c = a * c * d ↔ b = a * d", "tactic": "rw [mul_right_comm, mul_left_inj' hc]" } ]
[ 60, 65 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 58, 1 ]
Mathlib/MeasureTheory/Measure/MeasureSpace.lean
MeasureTheory.Measure.add_top
[]
[ 1083, 43 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1082, 1 ]
Mathlib/Algebra/Lie/Submodule.lean
LieIdeal.gc_map_comap
[]
[ 842, 91 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 842, 1 ]
Mathlib/Data/Rat/Lemmas.lean
Rat.coe_nat_div
[ { "state_after": "case intro\nb c : ℕ\n⊢ ↑(b * c / b) = ↑(b * c) / ↑b", "state_before": "a b : ℕ\nh : b ∣ a\n⊢ ↑(a / b) = ↑a / ↑b", "tactic": "rcases h with ⟨c, rfl⟩" }, { "state_after": "no goals", "state_before": "case intro\nb c : ℕ\n⊢ ↑(b * c / b) = ↑(b * c) / ↑b", "tactic": "simp on...
[ 255, 22 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 252, 1 ]
Mathlib/Data/Nat/Parity.lean
Nat.even_pow
[ { "state_after": "no goals", "state_before": "m n : ℕ\n⊢ Even (m ^ n) ↔ Even m ∧ n ≠ 0", "tactic": "induction' n with n ih <;> simp (config := { contextual := true }) [*, pow_succ', even_mul]" } ]
[ 175, 94 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 174, 17 ]
Mathlib/Topology/Homotopy/HSpaces.lean
unitInterval.qRight_zero_left
[ { "state_after": "no goals", "state_before": "θ : ↑I\n⊢ 2 * ↑(0, θ).fst / (1 + ↑(0, θ).snd) ≤ 0", "tactic": "simp only [coe_zero, mul_zero, zero_div, le_refl]" } ]
[ 193, 83 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 192, 1 ]
Mathlib/Algebra/Order/LatticeGroup.lean
LatticeOrderedCommGroup.m_le_pos
[]
[ 245, 14 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 244, 1 ]
Mathlib/RingTheory/UniqueFactorizationDomain.lean
factorization_one
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝³ : CancelCommMonoidWithZero α\ninst✝² : UniqueFactorizationMonoid α\ninst✝¹ : NormalizationMonoid α\ninst✝ : DecidableEq α\n⊢ factorization 1 = 0", "tactic": "simp [factorization]" } ]
[ 2020, 81 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2020, 1 ]
Mathlib/Algebra/FreeMonoid/Basic.lean
FreeMonoid.recOn_one
[]
[ 170, 35 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 169, 1 ]
Mathlib/LinearAlgebra/PiTensorProduct.lean
PiTensorProduct.tprod_eq_tprodCoeff_one
[]
[ 323, 72 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 322, 1 ]
Mathlib/Data/Set/Pointwise/Interval.lean
Set.preimage_const_mul_Ioi_of_neg
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝ : LinearOrderedField α\na✝ a c : α\nh : c < 0\n⊢ (fun x x_1 => x * x_1) c ⁻¹' Ioi a = Iio (a / c)", "tactic": "simpa only [mul_comm] using preimage_mul_const_Ioi_of_neg a h" } ]
[ 649, 64 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 647, 1 ]
Mathlib/AlgebraicGeometry/StructureSheaf.lean
AlgebraicGeometry.StructureSheaf.isUnit_toStalk
[ { "state_after": "R : Type u\ninst✝ : CommRing R\nx : ↑(PrimeSpectrum.Top R)\nf : { x_1 // x_1 ∈ Ideal.primeCompl x.asIdeal }\n⊢ IsUnit\n (↑(germ (Sheaf.presheaf (structureSheaf R)) { val := x, property := (_ : ↑f ∈ Ideal.primeCompl x.asIdeal) })\n (↑(toOpen R (PrimeSpectrum.basicOpen ↑f)) ↑f))", "s...
[ 473, 60 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 470, 1 ]
src/lean/Init/Core.lean
Iff.subst
[]
[ 1176, 27 ]
d5348dfac847a56a4595fb6230fd0708dcb4e7e9
https://github.com/leanprover/lean4
[ 1175, 1 ]
Mathlib/CategoryTheory/Sites/Subsheaf.lean
CategoryTheory.GrothendieckTopology.Subpresheaf.sheafify_isSheaf
[ { "state_after": "C : Type u\ninst✝ : Category C\nJ : GrothendieckTopology C\nF F' F'' : Cᵒᵖ ⥤ Type w\nG G' : Subpresheaf F\nhF : Presieve.IsSheaf J F\nU : C\nS : Sieve U\nhS : S ∈ sieves J U\nx : Presieve.FamilyOfElements (toPresheaf (sheafify J G)) S.arrows\nhx : Presieve.FamilyOfElements.Compatible x\n⊢ ∃! t...
[ 257, 18 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 218, 1 ]
Mathlib/Analysis/Convex/Slope.lean
ConvexOn.slope_mono_adjacent
[ { "state_after": "𝕜 : Type u_1\ninst✝ : LinearOrderedField 𝕜\ns : Set 𝕜\nf : 𝕜 → 𝕜\nhf : ConvexOn 𝕜 s f\nx y z : 𝕜\nhx : x ∈ s\nhz : z ∈ s\nhxy : x < y\nhyz : y < z\nhxz : x < z\n⊢ (f y - f x) / (y - x) ≤ (f z - f y) / (z - y)", "state_before": "𝕜 : Type u_1\ninst✝ : LinearOrderedField 𝕜\ns : Set �...
[ 52, 14 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 29, 1 ]
Mathlib/CategoryTheory/Monoidal/Category.lean
CategoryTheory.MonoidalCategory.tensor_dite
[ { "state_after": "no goals", "state_before": "C✝ : Type u\n𝒞 : Category C✝\ninst✝³ : MonoidalCategory C✝\nC : Type u\ninst✝² : Category C\ninst✝¹ : MonoidalCategory C\nU V W✝ X✝ Y✝ Z✝ : C\nP : Prop\ninst✝ : Decidable P\nW X Y Z : C\nf : W ⟶ X\ng : P → (Y ⟶ Z)\ng' : ¬P → (Y ⟶ Z)\n⊢ (f ⊗ if h : P then g h el...
[ 218, 23 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 216, 1 ]
Mathlib/Data/Set/Basic.lean
Set.forall_in_swap
[ { "state_after": "no goals", "state_before": "α : Type u\nβ : Type v\nγ : Type w\nι : Sort x\na b : α\ns s₁ s₂ t t₁ t₂ u : Set α\np : α → β → Prop\n⊢ (∀ (a : α), a ∈ s → ∀ (b : β), p a b) ↔ ∀ (b : β) (a : α), a ∈ s → p a b", "tactic": "tauto" } ]
[ 252, 8 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 251, 1 ]
Mathlib/Topology/ContinuousFunction/Compact.lean
ContinuousLinearMap.toLinear_compLeftContinuousCompact
[ { "state_after": "case h.h\nX : Type u_4\n𝕜 : Type u_1\nβ : Type u_2\nγ : Type u_3\ninst✝⁶ : TopologicalSpace X\ninst✝⁵ : CompactSpace X\ninst✝⁴ : NontriviallyNormedField 𝕜\ninst✝³ : NormedAddCommGroup β\ninst✝² : NormedSpace 𝕜 β\ninst✝¹ : NormedAddCommGroup γ\ninst✝ : NormedSpace 𝕜 γ\ng : β →L[𝕜] γ\nf : C...
[ 424, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 421, 1 ]
Mathlib/Analysis/Complex/CauchyIntegral.lean
DiffContOnCl.hasFPowerSeriesOnBall
[]
[ 581, 59 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 577, 1 ]
Mathlib/CategoryTheory/Limits/Shapes/ZeroMorphisms.lean
CategoryTheory.Limits.IsZero.of_epi
[ { "state_after": "C : Type u\ninst✝³ : Category C\nD : Type u'\ninst✝² : Category D\ninst✝¹ : HasZeroMorphisms C\nX Y : C\nf : X ⟶ Y\ninst✝ : Epi f\ni : IsZero X\nhf : f = 0\n⊢ IsZero Y", "state_before": "C : Type u\ninst✝³ : Category C\nD : Type u'\ninst✝² : Category D\ninst✝¹ : HasZeroMorphisms C\nX Y : C...
[ 244, 31 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 241, 1 ]
Mathlib/GroupTheory/Congruence.lean
Con.toSetoid_inj
[]
[ 203, 21 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 202, 1 ]
Mathlib/Order/CompleteLattice.lean
sInf_eq_iInf'
[]
[ 695, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 694, 1 ]
Mathlib/RingTheory/Ideal/MinimalPrime.lean
Ideal.exists_comap_eq_of_mem_minimalPrimes
[ { "state_after": "R : Type u_2\nS : Type u_1\ninst✝¹ : CommRing R\ninst✝ : CommRing S\nI✝ J : Ideal R\nI : Ideal S\nf : R →+* S\np : Ideal R\nH : p ∈ Ideal.minimalPrimes (comap f I)\nthis : IsPrime p\n⊢ ∃ p', IsPrime p' ∧ I ≤ p' ∧ comap f p' = p", "state_before": "R : Type u_2\nS : Type u_1\ninst✝¹ : CommRi...
[ 156, 64 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 126, 1 ]
Mathlib/Data/Complex/Basic.lean
Complex.abs_im_le_abs
[ { "state_after": "z : ℂ\n⊢ z.im ^ 2 ≤ z.re ^ 2 + z.im ^ 2", "state_before": "z : ℂ\n⊢ z.im ^ 2 ≤ ↑normSq z", "tactic": "rw [normSq_apply, ← sq, ← sq]" }, { "state_after": "no goals", "state_before": "z : ℂ\n⊢ z.im ^ 2 ≤ z.re ^ 2 + z.im ^ 2", "tactic": "exact le_add_of_nonneg_left (sq_non...
[ 1039, 46 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1036, 1 ]
Mathlib/RingTheory/RootsOfUnity/Basic.lean
IsPrimitiveRoot.card_rootsOfUnity
[ { "state_after": "case intro\nM : Type ?u.3545896\nN : Type ?u.3545899\nG : Type ?u.3545902\nR : Type u_1\nS : Type ?u.3545908\nF : Type ?u.3545911\ninst✝⁴ : CommMonoid M\ninst✝³ : CommMonoid N\ninst✝² : DivisionCommMonoid G\nk l : ℕ\ninst✝¹ : CommRing R\nζ✝¹ : Rˣ\nh✝ : IsPrimitiveRoot ζ✝¹ k\ninst✝ : IsDomain R...
[ 816, 29 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 812, 1 ]
Mathlib/Topology/Instances/ENNReal.lean
ENNReal.sSup_add
[ { "state_after": "no goals", "state_before": "α : Type ?u.135069\nβ : Type ?u.135072\nγ : Type ?u.135075\na b c d : ℝ≥0∞\nr p q : ℝ≥0\nx y z ε ε₁ ε₂ : ℝ≥0∞\ns✝ s : Set ℝ≥0∞\nhs : Set.Nonempty s\n⊢ sSup s + a = ⨆ (b : ℝ≥0∞) (_ : b ∈ s), b + a", "tactic": "rw [sSup_eq_iSup, biSup_add hs]" } ]
[ 590, 34 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 589, 1 ]
Mathlib/Algebra/Module/LocalizedModule.lean
LocalizedModule.add_zero'
[ { "state_after": "R : Type u\ninst✝² : CommSemiring R\nS : Submonoid R\nM : Type v\ninst✝¹ : AddCommMonoid M\ninst✝ : Module R M\nx : LocalizedModule S M\nm : M\ns : { x // x ∈ S }\n⊢ ∃ u, u • s • s • m = u • (s * s) • m", "state_before": "R : Type u\ninst✝² : CommSemiring R\nS : Submonoid R\nM : Type v\nin...
[ 197, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 192, 9 ]
Mathlib/Data/Finset/Powerset.lean
Finset.powersetLen_nonempty
[ { "state_after": "case empty\nα : Type u_1\ns✝ t : Finset α\nn✝ : ℕ\ns : Finset α\nh✝ : n✝ ≤ card s\nn : ℕ\nh : n ≤ card ∅\n⊢ Finset.Nonempty (powersetLen n ∅)\n\ncase insert\nα : Type u_1\ns✝¹ t : Finset α\nn✝ : ℕ\ns✝ : Finset α\nh✝ : n✝ ≤ card s✝\nx : α\ns : Finset α\nhx : ¬x ∈ s\nIH : ∀ {n : ℕ}, n ≤ card s →...
[ 267, 37 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 255, 1 ]
Mathlib/Algebra/BigOperators/Intervals.lean
Finset.prod_range_succ_div_top
[]
[ 240, 47 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 239, 1 ]
Mathlib/LinearAlgebra/Finsupp.lean
Submodule.exists_finset_of_mem_iSup
[ { "state_after": "R : Type u_2\nM : Type u_3\nN : Type ?u.759278\ninst✝⁴ : Semiring R\ninst✝³ : AddCommMonoid M\ninst✝² : Module R M\ninst✝¹ : AddCommMonoid N\ninst✝ : Module R N\nι : Type u_1\np : ι → Submodule R M\nm : M\nhm : m ∈ ⨆ (i : ι), p i\nthis : (span R {m} ≤ ⨆ (i : ι), p i) → ∃ s, span R {m} ≤ ⨆ (i :...
[ 1163, 16 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1157, 1 ]
Mathlib/Algebra/Free.lean
Magma.AssocQuotient.quot_mk_assoc
[]
[ 355, 36 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 354, 1 ]
Mathlib/NumberTheory/Multiplicity.lean
Int.two_pow_sub_pow'
[ { "state_after": "R : Type ?u.860418\nn✝ : ℕ\nx y : ℤ\nn : ℕ\nhxy : 4 ∣ x - y\nhx : ¬2 ∣ x\nhx_odd : Odd x\n⊢ multiplicity 2 (x ^ n - y ^ n) = multiplicity 2 (x - y) + multiplicity 2 ↑n", "state_before": "R : Type ?u.860418\nn✝ : ℕ\nx y : ℤ\nn : ℕ\nhxy : 4 ∣ x - y\nhx : ¬2 ∣ x\n⊢ multiplicity 2 (x ^ n - y ^...
[ 330, 31 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 310, 1 ]
Mathlib/Algebra/Lie/Classical.lean
LieAlgebra.Orthogonal.indefiniteDiagonal_assoc
[ { "state_after": "case a.h\nn : Type ?u.166573\np : Type ?u.166576\nq : Type ?u.166579\nl : Type u_1\nR : Type u₂\ninst✝⁷ : DecidableEq n\ninst✝⁶ : DecidableEq p\ninst✝⁵ : DecidableEq q\ninst✝⁴ : DecidableEq l\ninst✝³ : CommRing R\ninst✝² : Fintype p\ninst✝¹ : Fintype q\ninst✝ : Fintype l\ni j : (Unit ⊕ l) ⊕ l\...
[ 375, 12 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 362, 1 ]
Mathlib/Combinatorics/SetFamily/Compression/Down.lean
Down.card_compression
[ { "state_after": "α : Type u_1\ninst✝ : DecidableEq α\n𝒜✝ ℬ : Finset (Finset α)\ns : Finset α\na✝ a : α\n𝒜 : Finset (Finset α)\n⊢ card (filter (fun s => erase s a ∈ 𝒜) 𝒜 ∪ filter ((fun s => ¬s ∈ 𝒜) ∘ fun s => erase s a) 𝒜) = card 𝒜\n\nα : Type u_1\ninst✝ : DecidableEq α\n𝒜✝ ℬ : Finset (Finset α)\ns : Fi...
[ 216, 81 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 209, 1 ]
Mathlib/Data/Sum/Order.lean
WithBot.orderIsoPUnitSumLex_toLex
[]
[ 755, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 754, 1 ]
Mathlib/LinearAlgebra/AffineSpace/AffineSubspace.lean
AffineSubspace.direction_eq_vectorSpan
[]
[ 207, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 206, 1 ]
Mathlib/GroupTheory/Subgroup/ZPowers.lean
Subgroup.zpowers_ne_bot
[]
[ 219, 21 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 218, 1 ]
Mathlib/Algebra/Parity.lean
even_iff_exists_bit0
[]
[ 236, 10 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 235, 1 ]
Mathlib/Data/Nat/GCD/Basic.lean
Nat.coprime_one_left_iff
[ { "state_after": "no goals", "state_before": "n : ℕ\n⊢ coprime 1 n ↔ True", "tactic": "simp [coprime]" } ]
[ 209, 79 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 209, 1 ]
Mathlib/Combinatorics/SimpleGraph/Basic.lean
SimpleGraph.Embedding.map_mem_edgeSet_iff
[]
[ 1782, 40 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1781, 1 ]
Mathlib/LinearAlgebra/LinearPMap.lean
LinearPMap.mem_graph_snd_inj
[ { "state_after": "R : Type u_1\ninst✝⁹ : Ring R\nE : Type u_2\ninst✝⁸ : AddCommGroup E\ninst✝⁷ : Module R E\nF : Type u_3\ninst✝⁶ : AddCommGroup F\ninst✝⁵ : Module R F\nG : Type ?u.552748\ninst✝⁴ : AddCommGroup G\ninst✝³ : Module R G\nM : Type ?u.553264\ninst✝² : Monoid M\ninst✝¹ : DistribMulAction M F\ninst✝ :...
[ 815, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 808, 1 ]
Mathlib/Data/Polynomial/Eval.lean
Polynomial.map_ofNat
[ { "state_after": "no goals", "state_before": "R : Type u\nS : Type v\nT : Type w\nι : Type y\na b : R\nm n✝ : ℕ\ninst✝² : Semiring R\np q r : R[X]\ninst✝¹ : Semiring S\nf : R →+* S\nn : ℕ\ninst✝ : Nat.AtLeastTwo n\n⊢ map f ↑n = ↑n", "tactic": "rw [Polynomial.map_nat_cast]" } ]
[ 767, 60 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 766, 11 ]
Mathlib/Order/CompleteLattice.lean
ofDual_iSup
[]
[ 455, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 454, 1 ]
Mathlib/Data/Subtype.lean
Subtype.ext_val
[]
[ 90, 14 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 89, 1 ]
Mathlib/Order/GameAdd.lean
Sym2.GameAdd.snd_fst
[ { "state_after": "α : Type u_1\nβ : Type ?u.6116\nrα : α → α → Prop\nrβ : β → β → Prop\na₁ a₂ b : α\nh : rα a₁ a₂\n⊢ GameAdd rα (Quotient.mk (Rel.setoid α) (a₁, b)) (Quotient.mk (Rel.setoid α) (a₂, b))", "state_before": "α : Type u_1\nβ : Type ?u.6116\nrα : α → α → Prop\nrβ : β → β → Prop\na₁ a₂ b : α\nh : ...
[ 197, 22 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 195, 1 ]
Mathlib/NumberTheory/Padics/Hensel.lean
tendsto_zero_of_norm_tendsto_zero
[ { "state_after": "no goals", "state_before": "p : ℕ\ninst✝ : Fact (Nat.Prime p)\nncs : CauSeq ℤ_[p] norm\nF : Polynomial ℤ_[p]\nhnorm : Tendsto (fun i => ‖Polynomial.eval (↑ncs i) F‖) atTop (𝓝 0)\n⊢ Tendsto (fun e => ‖Polynomial.eval (↑ncs e) F - 0‖) atTop (𝓝 0)", "tactic": "simpa using hnorm" } ]
[ 87, 57 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 86, 9 ]
Mathlib/Data/List/BigOperators/Basic.lean
List.prod_inv_reverse
[ { "state_after": "no goals", "state_before": "ι : Type ?u.112709\nα : Type ?u.112712\nM : Type ?u.112715\nN : Type ?u.112718\nP : Type ?u.112721\nM₀ : Type ?u.112724\nG : Type u_1\nR : Type ?u.112730\ninst✝ : Group G\n⊢ (prod [])⁻¹ = prod (reverse (map (fun x => x⁻¹) []))", "tactic": "simp" }, { ...
[ 417, 45 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 415, 1 ]
Mathlib/Data/Nat/Factorization/Basic.lean
Nat.setOf_pow_dvd_eq_Icc_factorization
[ { "state_after": "case h\nn p : ℕ\npp : Prime p\nhn : n ≠ 0\nx✝ : ℕ\n⊢ x✝ ∈ {i | i ≠ 0 ∧ p ^ i ∣ n} ↔ x✝ ∈ Set.Icc 1 (↑(factorization n) p)", "state_before": "n p : ℕ\npp : Prime p\nhn : n ≠ 0\n⊢ {i | i ≠ 0 ∧ p ^ i ∣ n} = Set.Icc 1 (↑(factorization n) p)", "tactic": "ext" }, { "state_after": "no...
[ 719, 77 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 716, 1 ]
Mathlib/Analysis/Convex/Combination.lean
Finset.centerMass_eq_of_sum_1
[ { "state_after": "no goals", "state_before": "R : Type u_1\nE : Type u_3\nF : Type ?u.30257\nι : Type u_2\nι' : Type ?u.30263\nα : Type ?u.30266\ninst✝⁷ : LinearOrderedField R\ninst✝⁶ : AddCommGroup E\ninst✝⁵ : AddCommGroup F\ninst✝⁴ : LinearOrderedAddCommGroup α\ninst✝³ : Module R E\ninst✝² : Module R F\ni...
[ 77, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 75, 1 ]
Mathlib/Analysis/SpecialFunctions/Trigonometric/Basic.lean
Real.cos_pi_div_six
[ { "state_after": "x : ℝ\n⊢ sqrt 3 = cos (π / 6) * 2", "state_before": "x : ℝ\n⊢ cos (π / 6) = sqrt 3 / 2", "tactic": "suffices sqrt 3 = cos (π / 6) * 2 by\n field_simp [(by norm_num : 0 ≠ 2)]\n exact this.symm" }, { "state_after": "x : ℝ\n⊢ (cos (π / 6) * 2) ^ 2 = 3\n\ncase hx\nx : ℝ\n⊢ 0 ≤ 3\...
[ 885, 13 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 874, 1 ]