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start
list
Mathlib/Analysis/NormedSpace/Multilinear.lean
continuousMultilinearCurryRightEquiv_symm_apply'
[]
[ 1588, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1585, 1 ]
Mathlib/Algebra/Order/Floor.lean
Int.ceil_sub_self_eq
[ { "state_after": "F : Type ?u.235278\nα : Type u_1\nβ : Type ?u.235284\ninst✝¹ : LinearOrderedRing α\ninst✝ : FloorRing α\nz : ℤ\na : α\nha : fract a ≠ 0\n⊢ ↑⌈a⌉ - a = 1 - (a + 1 - ↑⌈a⌉)", "state_before": "F : Type ?u.235278\nα : Type u_1\nβ : Type ?u.235284\ninst✝¹ : LinearOrderedRing α\ninst✝ : FloorRing ...
[ 1258, 7 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1256, 1 ]
Mathlib/MeasureTheory/Measure/AEDisjoint.lean
MeasureTheory.AEDisjoint.mono
[]
[ 87, 82 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 86, 11 ]
Mathlib/Analysis/Normed/Order/UpperLower.lean
IsUpperSet.cthickening'
[ { "state_after": "α : Type u_1\nι : Type ?u.1091\ninst✝ : NormedOrderedGroup α\ns : Set α\nhs : IsUpperSet s\nε : ℝ\n⊢ IsUpperSet (⋂ (ε_1 : ℝ) (_ : max 0 ε < ε_1), thickening ε_1 s)", "state_before": "α : Type u_1\nι : Type ?u.1091\ninst✝ : NormedOrderedGroup α\ns : Set α\nhs : IsUpperSet s\nε : ℝ\n⊢ IsUppe...
[ 56, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 53, 11 ]
Mathlib/MeasureTheory/Measure/MeasureSpaceDef.lean
MeasureTheory.frequently_ae_iff
[]
[ 386, 29 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 385, 1 ]
Mathlib/GroupTheory/Subsemigroup/Basic.lean
Subsemigroup.coe_inf
[]
[ 224, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 223, 1 ]
Mathlib/Order/SuccPred/Basic.lean
Order.min_of_le_pred
[]
[ 604, 27 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 603, 1 ]
Std/Data/String/Lemmas.lean
String.prev_of_valid'
[ { "state_after": "no goals", "state_before": "cs cs' : List Char\n⊢ prev { data := cs ++ cs' } { byteIdx := utf8Len cs } = { byteIdx := utf8Len (List.dropLast cs) }", "tactic": "match cs, cs.eq_nil_or_concat with\n| _, .inl rfl => rfl\n| _, .inr ⟨cs, c, rfl⟩ => simp [prev_of_valid]" }, { "state_...
[ 292, 49 ]
e68aa8f5fe47aad78987df45f99094afbcb5e936
https://github.com/leanprover/std4
[ 288, 1 ]
Mathlib/CategoryTheory/Sites/Plus.lean
CategoryTheory.GrothendieckTopology.isoToPlus_hom
[]
[ 307, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 306, 1 ]
Mathlib/Data/Real/ENNReal.lean
ENNReal.toNNReal_mul_top
[ { "state_after": "no goals", "state_before": "α : Type ?u.818251\nβ : Type ?u.818254\na✝ b c d : ℝ≥0∞\nr p q : ℝ≥0\na : ℝ≥0∞\n⊢ ENNReal.toNNReal (a * ⊤) = 0", "tactic": "simp" } ]
[ 2200, 78 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2200, 1 ]
Mathlib/Control/Traversable/Lemmas.lean
Traversable.traverse_map
[ { "state_after": "t : Type u → Type u\ninst✝⁵ : Traversable t\ninst✝⁴ : IsLawfulTraversable t\nF G : Type u → Type u\ninst✝³ : Applicative F\ninst✝² : LawfulApplicative F\ninst✝¹ : Applicative G\ninst✝ : LawfulApplicative G\nα β γ : Type u\ng✝ : α → F β\nh : β → G γ\nf✝ : β → γ\nx✝ : t β\nf : β → F γ\ng : α → β...
[ 91, 41 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 87, 1 ]
Mathlib/GroupTheory/Subgroup/Basic.lean
Subgroup.inclusion_range
[]
[ 2687, 68 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2685, 1 ]
Mathlib/Probability/ProbabilityMassFunction/Basic.lean
Pmf.toOuterMeasure_apply_eq_one_iff
[ { "state_after": "case refine'_1\nα : Type u_1\nβ : Type ?u.26301\nγ : Type ?u.26304\np : Pmf α\ns t : Set α\nh : (∑' (x : α), Set.indicator s (↑p) x) = 1\na : α\nhap : a ∈ support p\n⊢ a ∈ s\n\ncase refine'_2\nα : Type u_1\nβ : Type ?u.26301\nγ : Type ?u.26304\np : Pmf α\ns t : Set α\nh : support p ⊆ s\n⊢ (∑' ...
[ 210, 75 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 200, 1 ]
Mathlib/MeasureTheory/Integral/Bochner.lean
MeasureTheory.dominatedFinMeasAdditive_weightedSMul
[]
[ 248, 88 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 246, 1 ]
Mathlib/Algebra/Star/SelfAdjoint.lean
isSelfAdjoint_smul_of_mem_skewAdjoint
[]
[ 550, 74 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 547, 1 ]
Mathlib/Topology/Algebra/Order/IntermediateValue.lean
IsPreconnected.eq_univ_of_unbounded
[ { "state_after": "X : Type u\nα : Type v\ninst✝³ : TopologicalSpace X\ninst✝² : LinearOrder α\ninst✝¹ : TopologicalSpace α\ninst✝ : OrderClosedTopology α\ns : Set α\nhs : IsPreconnected s\nhb : ¬BddBelow s\nha : ¬BddAbove s\nx : α\n⊢ x ∈ s", "state_before": "X : Type u\nα : Type v\ninst✝³ : TopologicalSpace...
[ 239, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 234, 1 ]
Mathlib/NumberTheory/ClassNumber/AdmissibleAbsoluteValue.lean
AbsoluteValue.IsAdmissible.exists_approx_aux
[ { "state_after": "R : Type u_1\ninst✝ : EuclideanDomain R\nabv : AbsoluteValue R ℤ\nn : ℕ\nh : IsAdmissible abv\nthis : DecidableEq R\n⊢ ∀ {ε : ℝ},\n 0 < ε →\n ∀ {b : R},\n b ≠ 0 →\n ∀ (A : Fin (Nat.succ (IsAdmissible.card h ε ^ n)) → Fin n → R),\n ∃ i₀ i₁, i₀ ≠ i₁ ∧ ∀ (k : Fi...
[ 123, 14 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 77, 1 ]
Mathlib/Topology/Sheaves/Presheaf.lean
TopCat.Presheaf.Pushforward.id_hom_app'
[ { "state_after": "C : Type u\ninst✝ : Category C\nX : TopCat\nℱ : Presheaf C X\nU : Set ↑X\np : IsOpen U\n⊢ (whiskerRight (NatTrans.op (Opens.mapId X).inv) ℱ ≫ (Functor.leftUnitor ℱ).hom).app\n { carrier := U, is_open' := p }.op =\n ℱ.map (𝟙 { carrier := U, is_open' := p }.op)", "state_before": "C ...
[ 222, 29 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 220, 1 ]
Mathlib/Analysis/NormedSpace/OperatorNorm.lean
ContinuousLinearMap.lipschitz_apply
[]
[ 497, 92 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 496, 1 ]
Mathlib/Topology/FiberBundle/Constructions.lean
Trivialization.Prod.right_inv
[ { "state_after": "case mk.mk\nB : Type u_1\ninst✝⁶ : TopologicalSpace B\nF₁ : Type u_3\ninst✝⁵ : TopologicalSpace F₁\nE₁ : B → Type u_4\ninst✝⁴ : TopologicalSpace (TotalSpace E₁)\nF₂ : Type u_2\ninst✝³ : TopologicalSpace F₂\nE₂ : B → Type u_5\ninst✝² : TopologicalSpace (TotalSpace E₂)\ne₁ : Trivialization F₁ To...
[ 213, 63 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 208, 1 ]
Mathlib/Init/Data/Bool/Lemmas.lean
Bool.false_xor
[ { "state_after": "no goals", "state_before": "b : Bool\n⊢ xor false b = b", "tactic": "cases b <;> simp" } ]
[ 63, 70 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 63, 1 ]
Mathlib/ModelTheory/Basic.lean
FirstOrder.Language.Hom.map_rel
[]
[ 547, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 545, 1 ]
Mathlib/Order/Disjointed.lean
iSup_disjointed
[]
[ 147, 72 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 146, 1 ]
Mathlib/Algebra/Ring/BooleanRing.lean
ofBoolAlg_compl
[]
[ 304, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 303, 1 ]
Mathlib/NumberTheory/Zsqrtd/Basic.lean
Zsqrtd.gcd_pos_iff
[]
[ 394, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 393, 1 ]
Mathlib/Data/Num/Lemmas.lean
PosNum.cast_add
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝ : AddMonoidWithOne α\nm n : PosNum\n⊢ ↑(m + n) = ↑m + ↑n", "tactic": "rw [← cast_to_nat, add_to_nat, Nat.cast_add, cast_to_nat, cast_to_nat]" } ]
[ 664, 73 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 663, 1 ]
Mathlib/Control/Traversable/Instances.lean
List.traverse_eq_map_id
[ { "state_after": "case cons\nF G : Type u → Type u\ninst✝³ : Applicative F\ninst✝² : Applicative G\ninst✝¹ : LawfulApplicative F\ninst✝ : LawfulApplicative G\nα β : Type u_1\nf : α → β\nhead✝ : α\ntail✝ : List α\ntail_ih✝ : List.traverse (pure ∘ f) tail✝ = pure (f <$> tail✝)\n⊢ (Seq.seq (cons (f head✝)) fun x =...
[ 91, 47 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 89, 11 ]
Mathlib/Tactic/Ring/Basic.lean
Mathlib.Tactic.Ring.pow_one_cast
[ { "state_after": "no goals", "state_before": "u : Lean.Level\nR : Type u_1\nα : Q(Type u)\nsα : Q(CommSemiring «$α»)\ninst✝ : CommSemiring R\na : R\n⊢ a ^ Nat.rawCast 1 = a", "tactic": "simp" } ]
[ 761, 70 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 761, 1 ]
Mathlib/Data/Seq/WSeq.lean
Stream'.WSeq.mem_congr
[]
[ 1204, 37 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1200, 1 ]
Mathlib/Topology/Instances/ENNReal.lean
ENNReal.continuous_coe
[]
[ 80, 27 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 79, 1 ]
Mathlib/Analysis/SpecialFunctions/Trigonometric/Deriv.lean
Real.sinh_le_sinh
[]
[ 696, 28 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 695, 1 ]
Mathlib/Algebra/MonoidAlgebra/Basic.lean
MonoidAlgebra.opRingEquiv_symm_single
[ { "state_after": "no goals", "state_before": "k : Type u₁\nG : Type u₂\nR : Type ?u.1569928\ninst✝¹ : Semiring k\ninst✝ : Monoid G\nr : kᵐᵒᵖ\nx : Gᵐᵒᵖ\n⊢ ↑(RingEquiv.symm MonoidAlgebra.opRingEquiv) (single x r) = op (single (unop x) (unop r))", "tactic": "simp" } ]
[ 1118, 87 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1117, 1 ]
Mathlib/Data/Set/Basic.lean
Set.empty_def
[]
[ 558, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 557, 1 ]
Mathlib/SetTheory/Cardinal/Basic.lean
Cardinal.zero_power
[]
[ 579, 27 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 574, 1 ]
Mathlib/Combinatorics/Additive/PluenneckeRuzsa.lean
Finset.card_add_nsmul_le
[ { "state_after": "case inl\nα✝ : Type ?u.99967\ninst✝³ : CommGroup α✝\ninst✝² : DecidableEq α✝\nA B✝ C : Finset α✝\nα : Type u_1\ninst✝¹ : AddCommGroup α\ninst✝ : DecidableEq α\nB : Finset α\nn : ℕ\nhAB : ∀ (A' : Finset α), A' ⊆ ∅ → card (∅ + B) * card A' ≤ card (A' + B) * card ∅\n⊢ ↑(card (∅ + n • B)) ≤ (↑(car...
[ 197, 9 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 185, 1 ]
Mathlib/LinearAlgebra/BilinearForm.lean
BilinForm.orthogonal_le
[]
[ 1199, 100 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1199, 1 ]
Mathlib/Combinatorics/Configuration.lean
Configuration.HasPoints.lineCount_le_pointCount
[]
[ 224, 67 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 222, 1 ]
Mathlib/Order/Filter/Basic.lean
Filter.singleton_mem_pure
[]
[ 2595, 18 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 2594, 1 ]
Mathlib/CategoryTheory/Limits/Shapes/ZeroMorphisms.lean
CategoryTheory.Limits.zero_of_epi_comp
[ { "state_after": "C : Type u\ninst✝³ : Category C\nD : Type u'\ninst✝² : Category D\ninst✝¹ : HasZeroMorphisms C\nX Y Z : C\nf : X ⟶ Y\ng : Y ⟶ Z\ninst✝ : Epi f\nh✝ : f ≫ g = 0\nh : g = 0\n⊢ g = 0", "state_before": "C : Type u\ninst✝³ : Category C\nD : Type u'\ninst✝² : Category D\ninst✝¹ : HasZeroMorphisms...
[ 147, 10 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 145, 1 ]
Mathlib/LinearAlgebra/FreeModule/Rank.lean
rank_finsupp
[ { "state_after": "case intro.mk\nR : Type u\nM : Type v\nN : Type w\ninst✝⁷ : Ring R\ninst✝⁶ : StrongRankCondition R\ninst✝⁵ : AddCommGroup M\ninst✝⁴ : Module R M\ninst✝³ : Module.Free R M\ninst✝² : AddCommGroup N\ninst✝¹ : Module R N\ninst✝ : Module.Free R N\nι : Type w\nfst✝ : Type v\nbs : Basis fst✝ R M\n⊢ M...
[ 45, 24 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 41, 1 ]
Mathlib/LinearAlgebra/Matrix/Determinant.lean
Matrix.det_eq_of_forall_col_eq_smul_add_pred
[ { "state_after": "m : Type ?u.1750254\nn✝ : Type ?u.1750257\ninst✝⁴ : DecidableEq n✝\ninst✝³ : Fintype n✝\ninst✝² : DecidableEq m\ninst✝¹ : Fintype m\nR : Type v\ninst✝ : CommRing R\nn : ℕ\nA B : Matrix (Fin (n + 1)) (Fin (n + 1)) R\nc : Fin n → R\nA_zero : ∀ (i : Fin (n + 1)), A i 0 = B i 0\nA_succ : ∀ (i : Fi...
[ 569, 77 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 564, 1 ]
Mathlib/Algebra/GroupPower/Lemmas.lean
SemiconjBy.cast_nat_mul_left
[]
[ 1040, 47 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1039, 1 ]
Mathlib/Data/PNat/Basic.lean
PNat.mul_coe
[]
[ 232, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 231, 1 ]
Mathlib/Data/Real/CauSeq.lean
CauSeq.limZero_sub_rev
[ { "state_after": "no goals", "state_before": "α : Type u_1\nβ : Type u_2\ninst✝² : LinearOrderedField α\ninst✝¹ : Ring β\nabv : β → α\ninst✝ : IsAbsoluteValue abv\nf g : CauSeq β abv\nhfg : LimZero (f - g)\n⊢ LimZero (g - f)", "tactic": "simpa using neg_limZero hfg" } ]
[ 451, 30 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 450, 1 ]
Mathlib/Algebra/Star/StarAlgHom.lean
StarAlgHom.coe_comp
[]
[ 449, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 448, 1 ]
Mathlib/LinearAlgebra/Span.lean
Submodule.sup_toAddSubgroup
[ { "state_after": "case h\nR✝ : Type ?u.111042\nR₂ : Type ?u.111045\nK : Type ?u.111048\nM✝ : Type ?u.111051\nM₂ : Type ?u.111054\nV : Type ?u.111057\nS : Type ?u.111060\ninst✝⁸ : Semiring R✝\ninst✝⁷ : AddCommMonoid M✝\ninst✝⁶ : Module R✝ M✝\nx✝ : M✝\np✝ p'✝ : Submodule R✝ M✝\ninst✝⁵ : Semiring R₂\nσ₁₂ : R✝ →+* ...
[ 384, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 380, 1 ]
Mathlib/MeasureTheory/MeasurableSpace.lean
MeasurableEquiv.symm_apply_apply
[]
[ 1269, 15 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1268, 1 ]
Mathlib/Data/Finset/NAry.lean
Finset.image₂_left_comm
[ { "state_after": "α : Type u_3\nα' : Type ?u.72811\nβ : Type u_5\nβ' : Type ?u.72817\nγ✝ : Type ?u.72820\nγ' : Type ?u.72823\nδ : Type u_4\nδ' : Type u_6\nε : Type u_2\nε' : Type ?u.72835\nζ : Type ?u.72838\nζ' : Type ?u.72841\nν : Type ?u.72844\ninst✝⁷ : DecidableEq α'\ninst✝⁶ : DecidableEq β'\ninst✝⁵ : Decida...
[ 388, 39 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 383, 1 ]
Mathlib/NumberTheory/ArithmeticFunction.lean
Nat.ArithmeticFunction.sigma_one_apply
[ { "state_after": "no goals", "state_before": "R : Type ?u.522889\nn : ℕ\n⊢ ↑(σ 1) n = ∑ d in divisors n, d", "tactic": "simp [sigma_apply]" } ]
[ 788, 88 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 788, 1 ]
Mathlib/GroupTheory/FreeAbelianGroup.lean
FreeAbelianGroup.ofMulHom_coe
[]
[ 501, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 500, 1 ]
Mathlib/CategoryTheory/Limits/Shapes/BinaryProducts.lean
CategoryTheory.Limits.map_inr_inv_coprodComparison
[ { "state_after": "no goals", "state_before": "C : Type u\ninst✝⁶ : Category C\nX Y : C\nD : Type u₂\ninst✝⁵ : Category D\nF : C ⥤ D\nA A' B B' : C\ninst✝⁴ : HasBinaryCoproduct A B\ninst✝³ : HasBinaryCoproduct A' B'\ninst✝² : HasBinaryCoproduct (F.obj A) (F.obj B)\ninst✝¹ : HasBinaryCoproduct (F.obj A') (F.o...
[ 1379, 96 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1378, 1 ]
Mathlib/Order/LiminfLimsup.lean
Filter.IsCobounded.mk
[]
[ 194, 24 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 191, 1 ]
Mathlib/RingTheory/Ideal/Quotient.lean
Ideal.Quotient.maximal_of_isField
[ { "state_after": "R : Type u\ninst✝ : CommRing R\nI✝ : Ideal R\na b : R\nS : Type v\nx y : R\nI : Ideal R\nhqf : IsField (R ⧸ I)\n⊢ ¬1 ∈ I ∧ ∀ (J : Ideal R) (x : R), I ≤ J → ¬x ∈ I → x ∈ J → 1 ∈ J", "state_before": "R : Type u\ninst✝ : CommRing R\nI✝ : Ideal R\na b : R\nS : Type v\nx y : R\nI : Ideal R\nhqf...
[ 252, 77 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 243, 1 ]
Mathlib/SetTheory/Lists.lean
Lists'.toList_cons
[ { "state_after": "no goals", "state_before": "α : Type u_1\na : Lists α\nl : Lists' α true\n⊢ toList (cons a l) = a :: toList l", "tactic": "simp" } ]
[ 90, 85 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 90, 1 ]
Mathlib/NumberTheory/Padics/PadicIntegers.lean
PadicInt.mk_zero
[]
[ 121, 60 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 121, 1 ]
Mathlib/LinearAlgebra/Matrix/Hermitian.lean
Matrix.isHermitian_fromBlocks_iff
[]
[ 127, 65 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 121, 1 ]
Mathlib/Data/Fintype/Basic.lean
Finset.map_univ_of_surjective
[]
[ 265, 75 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 264, 1 ]
Mathlib/Computability/PartrecCode.lean
Nat.Partrec.Code.eval_eq_rfindOpt
[ { "state_after": "c : Code\nn x : ℕ\n⊢ ∀ {a m n_1 : ℕ}, m ≤ n_1 → a ∈ evaln m c n → a ∈ evaln n_1 c n", "state_before": "c : Code\nn x : ℕ\n⊢ x ∈ eval c n ↔ x ∈ rfindOpt fun k => evaln k c n", "tactic": "refine' evaln_complete.trans (Nat.rfindOpt_mono _).symm" }, { "state_after": "c : Code\nn✝ x...
[ 1158, 40 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1155, 1 ]
Mathlib/Analysis/ODE/PicardLindelof.lean
PicardLindelof.exists_solution
[ { "state_after": "case intro\nE : Type u_1\ninst✝² : NormedAddCommGroup E\ninst✝¹ : NormedSpace ℝ E\nv : PicardLindelof E\ninst✝ : CompleteSpace E\nf : FunSpace v\nhf : FunSpace.next f = f\n⊢ ∃ f, f ↑v.t₀ = v.x₀ ∧ ∀ (t : ℝ), t ∈ Icc v.tMin v.tMax → HasDerivWithinAt f (toFun v t (f t)) (Icc v.tMin v.tMax) t", ...
[ 374, 64 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 366, 1 ]
Mathlib/Algebra/DirectSum/Algebra.lean
DirectSum.algebraMap_apply
[]
[ 91, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 89, 1 ]
Mathlib/Algebra/GroupPower/Lemmas.lean
zpow_mul
[ { "state_after": "α : Type u_1\nM : Type u\nN : Type v\nG : Type w\nH : Type x\nA : Type y\nB : Type z\nR : Type u₁\nS : Type u₂\ninst✝ : DivisionMonoid α\na : α\nm n : ℕ\n⊢ a ^ (↑m * ↑n) = a ^ ↑(m * n)", "state_before": "α : Type u_1\nM : Type u\nN : Type v\nG : Type w\nH : Type x\nA : Type y\nB : Type z\n...
[ 154, 8 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 142, 1 ]
Mathlib/LinearAlgebra/Matrix/Hermitian.lean
Matrix.IsHermitian.neg
[]
[ 184, 22 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 183, 1 ]
Mathlib/Data/Matrix/Block.lean
Matrix.blockDiagonal_neg
[]
[ 447, 48 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 445, 1 ]
Mathlib/Analysis/SpecialFunctions/Arsinh.lean
Real.arsinh_injective
[]
[ 133, 27 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 132, 1 ]
Mathlib/Analysis/Convex/StrictConvexBetween.lean
Collinear.wbtw_of_dist_eq_of_dist_le
[ { "state_after": "case inl\nV : Type u_1\nP : Type u_2\ninst✝⁴ : NormedAddCommGroup V\ninst✝³ : NormedSpace ℝ V\ninst✝² : PseudoMetricSpace P\ninst✝¹ : NormedAddTorsor V P\ninst✝ : StrictConvexSpace ℝ V\np p₁ p₂ p₃ : P\nr : ℝ\nh : Collinear ℝ {p₁, p₂, p₃}\nhp₁ : dist p₁ p = r\nhp₂ : dist p₂ p ≤ r\nhp₃ : dist p₃...
[ 70, 38 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 54, 1 ]
Mathlib/Data/Dfinsupp/Basic.lean
Dfinsupp.coe_nsmul
[]
[ 265, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 264, 1 ]
Mathlib/Topology/Separation.lean
SeparatedNhds.disjoint
[]
[ 138, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 137, 11 ]
Mathlib/Data/Nat/Basic.lean
Nat.div_le_iff_le_mul_add_pred
[ { "state_after": "m✝ n✝ k✝ m n k : ℕ\nn0 : 0 < n\n⊢ m < n * k + n ↔ m ≤ n * k + (n - 1)", "state_before": "m✝ n✝ k✝ m n k : ℕ\nn0 : 0 < n\n⊢ m / n ≤ k ↔ m ≤ n * k + (n - 1)", "tactic": "rw [← lt_succ_iff, div_lt_iff_lt_mul n0, succ_mul, mul_comm]" }, { "state_after": "case zero\nm✝ n k✝ m k : ℕ\...
[ 249, 20 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 244, 1 ]
Mathlib/MeasureTheory/Constructions/Prod/Basic.lean
MeasureTheory.MeasurePreserving.skew_product
[ { "state_after": "α : Type u_3\nα' : Type ?u.4501625\nβ : Type u_1\nβ' : Type ?u.4501631\nγ : Type u_4\nE : Type ?u.4501637\ninst✝⁸ : MeasurableSpace α\ninst✝⁷ : MeasurableSpace α'\ninst✝⁶ : MeasurableSpace β\ninst✝⁵ : MeasurableSpace β'\ninst✝⁴ : MeasurableSpace γ\nμ μ' : Measure α\nν ν' : Measure β\nτ : Measu...
[ 648, 40 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 622, 1 ]
Mathlib/AlgebraicGeometry/PrimeSpectrum/Basic.lean
PrimeSpectrum.zeroLocus_span
[ { "state_after": "case h\nR : Type u\nS : Type v\ninst✝¹ : CommRing R\ninst✝ : CommRing S\ns : Set R\nx : PrimeSpectrum R\n⊢ x ∈ zeroLocus ↑(Ideal.span s) ↔ x ∈ zeroLocus s", "state_before": "R : Type u\nS : Type v\ninst✝¹ : CommRing R\ninst✝ : CommRing S\ns : Set R\n⊢ zeroLocus ↑(Ideal.span s) = zeroLocus ...
[ 148, 42 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 146, 1 ]
Mathlib/Data/Num/Lemmas.lean
PosNum.pred_to_nat
[ { "state_after": "n : PosNum\nh : 1 < n\n⊢ ↑(Num.casesOn (pred' n) 1 id) = Nat.pred ↑n", "state_before": "n : PosNum\nh : 1 < n\n⊢ ↑(pred n) = Nat.pred ↑n", "tactic": "unfold pred" }, { "state_after": "case zero\nn : PosNum\nh : 1 < n\ne : pred' n = zero\n⊢ ↑(Num.casesOn zero 1 id) = Nat.pred ↑n...
[ 816, 8 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 809, 1 ]
Mathlib/Topology/Category/Locale.lean
Locale.coe_of
[]
[ 46, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 45, 1 ]
Mathlib/Analysis/BoxIntegral/Partition/Tagged.lean
BoxIntegral.TaggedPrepartition.iUnion_single
[]
[ 342, 32 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 341, 1 ]
Mathlib/GroupTheory/Perm/Cycle/Type.lean
Equiv.Perm.cycleType_inv
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝¹ : Fintype α\ninst✝ : DecidableEq α\nσ✝ σ : Perm α\nhσ : IsCycle σ\n⊢ (fun τ => cycleType τ⁻¹ = cycleType τ) σ", "tactic": "simp only [hσ.cycleType, hσ.inv.cycleType, support_inv]" }, { "state_after": "no goals", "state_before...
[ 137, 18 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 132, 1 ]
Mathlib/Algebra/Star/StarAlgHom.lean
NonUnitalStarAlgHom.snd_prod
[ { "state_after": "case h\nR : Type u_1\nA : Type u_2\nB : Type u_3\nC : Type u_4\ninst✝⁹ : Monoid R\ninst✝⁸ : NonUnitalNonAssocSemiring A\ninst✝⁷ : DistribMulAction R A\ninst✝⁶ : Star A\ninst✝⁵ : NonUnitalNonAssocSemiring B\ninst✝⁴ : DistribMulAction R B\ninst✝³ : Star B\ninst✝² : NonUnitalNonAssocSemiring C\ni...
[ 539, 11 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 538, 1 ]
Mathlib/LinearAlgebra/Matrix/ToLin.lean
Matrix.toLinAlgEquiv'_mul
[]
[ 501, 24 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 499, 1 ]
Mathlib/GroupTheory/Index.lean
Subgroup.relindex_ker
[ { "state_after": "G : Type u_2\ninst✝¹ : Group G\nH✝ K✝ L : Subgroup G\nH : Type u_1\ninst✝ : Group H\nf : G →* H\nK : Subgroup G\n⊢ Nat.card { x // x ∈ map f K } = Nat.card ↑(↑f '' ↑K)", "state_before": "G : Type u_2\ninst✝¹ : Group G\nH✝ K✝ L : Subgroup G\nH : Type u_1\ninst✝ : Group H\nf : G →* H\nK : Su...
[ 287, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 284, 1 ]
Mathlib/RingTheory/OreLocalization/Basic.lean
OreLocalization.expand'
[ { "state_after": "R : Type u_1\ninst✝¹ : Monoid R\nS : Submonoid R\ninst✝ : OreSet S\nr : R\ns s' : { x // x ∈ S }\n⊢ ↑(s * s') ∈ S", "state_before": "R : Type u_1\ninst✝¹ : Monoid R\nS : Submonoid R\ninst✝ : OreSet S\nr : R\ns s' : { x // x ∈ S }\n⊢ ↑s * ↑s' ∈ S", "tactic": "norm_cast" }, { "st...
[ 127, 70 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 126, 11 ]
Std/Data/List/Lemmas.lean
List.range'_subset_right_1
[ { "state_after": "no goals", "state_before": "s m n : Nat\n⊢ 0 < 1", "tactic": "decide" } ]
[ 1868, 34 ]
e68aa8f5fe47aad78987df45f99094afbcb5e936
https://github.com/leanprover/std4
[ 1867, 1 ]
Mathlib/Topology/Compactification/OnePoint.lean
OnePoint.isOpen_iff_of_mem'
[ { "state_after": "no goals", "state_before": "X : Type u_1\ninst✝ : TopologicalSpace X\ns : Set (OnePoint X)\nt : Set X\nh : ∞ ∈ s\n⊢ IsOpen s ↔ IsCompact ((some ⁻¹' s)ᶜ) ∧ IsOpen (some ⁻¹' s)", "tactic": "simp [isOpen_def, h]" } ]
[ 216, 23 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 214, 1 ]
Std/Data/String/Lemmas.lean
String.utf8Len_le_of_infix
[]
[ 71, 34 ]
e68aa8f5fe47aad78987df45f99094afbcb5e936
https://github.com/leanprover/std4
[ 70, 1 ]
Mathlib/Analysis/InnerProductSpace/GramSchmidtOrtho.lean
inner_gramSchmidtOrthonormalBasis_eq_zero
[ { "state_after": "𝕜 : Type u_2\nE : Type u_1\ninst✝⁷ : IsROrC 𝕜\ninst✝⁶ : NormedAddCommGroup E\ninst✝⁵ : InnerProductSpace 𝕜 E\nι : Type u_3\ninst✝⁴ : LinearOrder ι\ninst✝³ : LocallyFiniteOrderBot ι\ninst✝² : IsWellOrder ι fun x x_1 => x < x_1\ninst✝¹ : Fintype ι\ninst✝ : FiniteDimensional 𝕜 E\nh : finrank ...
[ 380, 61 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 365, 1 ]
Mathlib/Geometry/Manifold/LocalInvariantProperties.lean
StructureGroupoid.LocalInvariantProp.liftPropWithinAt_indep_chart_target_aux2
[ { "state_after": "H : Type u_1\nM : Type ?u.18883\nH' : Type u_2\nM' : Type u_3\nX : Type ?u.18892\ninst✝⁶ : TopologicalSpace H\ninst✝⁵ : TopologicalSpace M\ninst✝⁴ : ChartedSpace H M\ninst✝³ : TopologicalSpace H'\ninst✝² : TopologicalSpace M'\ninst✝¹ : ChartedSpace H' M'\ninst✝ : TopologicalSpace X\nG : Struct...
[ 281, 83 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 274, 1 ]
Mathlib/Topology/Algebra/Group/Basic.lean
continuous_zpow
[ { "state_after": "no goals", "state_before": "α : Type u\nβ : Type v\nG : Type w\nH : Type x\ninst✝³ : TopologicalSpace G\ninst✝² : Group G\ninst✝¹ : TopologicalGroup G\ninst✝ : TopologicalSpace α\nf : α → G\ns : Set α\nx : α\nn : ℕ\n⊢ Continuous fun a => a ^ Int.ofNat n", "tactic": "simpa using continu...
[ 494, 65 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 492, 1 ]
Mathlib/Topology/Basic.lean
closure_eq_iff_isClosed
[]
[ 481, 55 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 480, 1 ]
Mathlib/SetTheory/Cardinal/Basic.lean
Cardinal.le_sum
[ { "state_after": "α β : Type u\nι : Type u_1\nf : ι → Cardinal\ni : ι\n⊢ Quotient.mk isEquivalent (Quotient.out (f i)) ≤ sum f", "state_before": "α β : Type u\nι : Type u_1\nf : ι → Cardinal\ni : ι\n⊢ f i ≤ sum f", "tactic": "rw [← Quotient.out_eq (f i)]" }, { "state_after": "no goals", "sta...
[ 863, 57 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 861, 1 ]
Mathlib/Data/Matrix/Notation.lean
Matrix.one_fin_three
[ { "state_after": "case a.h\nα : Type u\no n m : ℕ\nm' : Type uₘ\nn' : Type uₙ\no' : Type uₒ\na b : ℕ\ninst✝¹ : Zero α\ninst✝ : One α\ni j : Fin 3\n⊢ OfNat.ofNat 1 i j = ↑of ![![1, 0, 0], ![0, 1, 0], ![0, 0, 1]] i j", "state_before": "α : Type u\no n m : ℕ\nm' : Type uₘ\nn' : Type uₙ\no' : Type uₒ\na b : ℕ\n...
[ 418, 38 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 416, 1 ]
Mathlib/CategoryTheory/Shift/Basic.lean
CategoryTheory.shift_shiftFunctorCompIsoId_neg_add_self_hom_app
[ { "state_after": "no goals", "state_before": "C : Type u\nA : Type u_1\ninst✝² : Category C\ninst✝¹ : AddGroup A\ninst✝ : HasShift C A\nX✝ Y : C\nf : X✝ ⟶ Y\nn : A\nX : C\n⊢ (shiftFunctor C (-n)).map ((shiftFunctorCompIsoId C (-n) n (_ : -n + n = 0)).hom.app X) =\n (shiftFunctorCompIsoId C n (-n) (_ : n ...
[ 538, 47 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 535, 1 ]
Mathlib/MeasureTheory/Measure/MeasureSpace.lean
MeasureTheory.Measure.finiteAt_nhds
[]
[ 3896, 40 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 3894, 1 ]
Mathlib/Data/Seq/Computation.lean
Computation.Mem.left_unique
[]
[ 345, 13 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 344, 1 ]
Mathlib/Data/Finsupp/Basic.lean
Finsupp.mapRange.addEquiv_toEquiv
[]
[ 291, 25 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 288, 1 ]
Mathlib/Algebra/Order/Invertible.lean
invOf_nonneg
[ { "state_after": "no goals", "state_before": "α : Type u_1\ninst✝¹ : LinearOrderedSemiring α\na : α\ninst✝ : Invertible a\n⊢ 0 < a * ⅟a", "tactic": "simp only [mul_invOf_self, zero_lt_one]" } ]
[ 34, 88 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 32, 1 ]
Mathlib/Topology/Constructions.lean
nhds_toDual
[]
[ 178, 69 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 178, 1 ]
Mathlib/Data/Real/ENNReal.lean
ENNReal.toReal_mono'
[ { "state_after": "case inl\nα : Type ?u.796201\nβ : Type ?u.796204\nb c d : ℝ≥0∞\nr p q : ℝ≥0\nh : ⊤ ≤ b\nht : b = ⊤ → ⊤ = ⊤\n⊢ ENNReal.toReal ⊤ ≤ ENNReal.toReal b\n\ncase inr\nα : Type ?u.796201\nβ : Type ?u.796204\na b c d : ℝ≥0∞\nr p q : ℝ≥0\nh : a ≤ b\nht : b = ⊤ → a = ⊤\nha : a ≠ ⊤\n⊢ ENNReal.toReal a ≤ EN...
[ 1998, 35 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 1995, 1 ]
Mathlib/Data/Nat/Count.lean
Nat.count_add
[ { "state_after": "p : ℕ → Prop\ninst✝ : DecidablePred p\na b : ℕ\nthis : Disjoint (filter p (range a)) (filter p (map (addLeftEmbedding a) (range b)))\n⊢ count p (a + b) = count p a + count (fun k => p (a + k)) b", "state_before": "p : ℕ → Prop\ninst✝ : DecidablePred p\na b : ℕ\n⊢ count p (a + b) = count p ...
[ 86, 6 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 77, 1 ]
Mathlib/LinearAlgebra/AffineSpace/Independent.lean
affineIndependent_set_iff_linearIndependent_vsub
[ { "state_after": "k : Type u_2\nV : Type u_3\nP : Type u_1\ninst✝³ : Ring k\ninst✝² : AddCommGroup V\ninst✝¹ : Module k V\ninst✝ : AffineSpace V P\nι : Type ?u.62032\ns : Set P\np₁ : P\nhp₁ : p₁ ∈ s\n⊢ (LinearIndependent k fun i => ↑↑i -ᵥ ↑{ val := p₁, property := hp₁ }) ↔ LinearIndependent k fun v => ↑v", ...
[ 163, 76 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 144, 1 ]
Mathlib/RingTheory/UniqueFactorizationDomain.lean
UniqueFactorizationMonoid.factors_eq_normalizedFactors
[ { "state_after": "α : Type ?u.479911\ninst✝⁷ : CancelCommMonoidWithZero α\ninst✝⁶ : DecidableEq α\ninst✝⁵ : NormalizationMonoid α\ninst✝⁴ : UniqueFactorizationMonoid α\nM : Type u_1\ninst✝³ : CancelCommMonoidWithZero M\ninst✝² : DecidableEq M\ninst✝¹ : UniqueFactorizationMonoid M\ninst✝ : Unique Mˣ\nx : M\n⊢ fa...
[ 567, 23 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 562, 1 ]
Mathlib/Order/Lattice.lean
inf_inf_distrib_right
[]
[ 540, 37 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 539, 1 ]
Mathlib/Topology/Algebra/Monoid.lean
continuousMul_sInf
[]
[ 845, 84 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 840, 1 ]
Mathlib/Topology/MetricSpace/ThickenedIndicator.lean
thickenedIndicator_one
[]
[ 204, 68 ]
5a919533f110b7d76410134a237ee374f24eaaad
https://github.com/leanprover-community/mathlib4
[ 202, 1 ]