Context stringlengths 57 6.04k | file_name stringlengths 21 79 | start int64 14 1.49k | end int64 18 1.5k | theorem stringlengths 25 1.55k | proof stringlengths 5 7.36k | num_lines int64 1 150 | complexity_score float64 2.72 139,370,958,066,637,970,000,000,000,000,000,000,000,000,000,000,000,000,000B | diff_level int64 0 2 | file_diff_level float64 0 2 | theorem_same_file int64 1 32 | rank_file int64 0 2.51k |
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import Mathlib.Algebra.Homology.Single
#align_import algebra.homology.augment from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
noncomputable section
open CategoryTheory Limits HomologicalComplex
universe v u
variable {V : Type u} [Category.{v} V]
namespace ChainComplex
@[simps]... | Mathlib/Algebra/Homology/Augment.lean | 132 | 134 | theorem chainComplex_d_succ_succ_zero (C : ChainComplex V ℕ) (i : ℕ) : C.d (i + 2) 0 = 0 := by |
rw [C.shape]
exact i.succ_succ_ne_one.symm
| 2 | 7.389056 | 1 | 0.666667 | 3 | 587 |
import Mathlib.Algebra.GroupWithZero.Units.Basic
import Mathlib.Algebra.Group.Semiconj.Units
import Mathlib.Init.Classical
#align_import algebra.group_with_zero.semiconj from "leanprover-community/mathlib"@"70d50ecfd4900dd6d328da39ab7ebd516abe4025"
assert_not_exists DenselyOrdered
variable {α M₀ G₀ M₀' G₀' F F' :... | Mathlib/Algebra/GroupWithZero/Semiconj.lean | 45 | 54 | theorem inv_right₀ (h : SemiconjBy a x y) : SemiconjBy a x⁻¹ y⁻¹ := by |
by_cases ha : a = 0
· simp only [ha, zero_left]
by_cases hx : x = 0
· subst x
simp only [SemiconjBy, mul_zero, @eq_comm _ _ (y * a), mul_eq_zero] at h
simp [h.resolve_right ha]
· have := mul_ne_zero ha hx
rw [h.eq, mul_ne_zero_iff] at this
exact @units_inv_right _ _ _ (Units.mk0 x hx) (Units.... | 9 | 8,103.083928 | 2 | 0.75 | 4 | 654 |
import Mathlib.RingTheory.PowerSeries.Trunc
import Mathlib.RingTheory.PowerSeries.Inverse
import Mathlib.RingTheory.Derivation.Basic
namespace PowerSeries
open Polynomial Derivation Nat
section CommutativeSemiring
variable {R} [CommSemiring R]
noncomputable def derivativeFun (f : R⟦X⟧) : R⟦X⟧ := mk fun n ↦ coef... | Mathlib/RingTheory/PowerSeries/Derivative.lean | 60 | 68 | theorem trunc_derivativeFun (f : R⟦X⟧) (n : ℕ) :
trunc n f.derivativeFun = derivative (trunc (n + 1) f) := by |
ext d
rw [coeff_trunc]
split_ifs with h
· have : d + 1 < n + 1 := succ_lt_succ_iff.2 h
rw [coeff_derivativeFun, coeff_derivative, coeff_trunc, if_pos this]
· have : ¬d + 1 < n + 1 := by rwa [succ_lt_succ_iff]
rw [coeff_derivative, coeff_trunc, if_neg this, zero_mul]
| 7 | 1,096.633158 | 2 | 1.111111 | 9 | 1,200 |
import Mathlib.Algebra.Order.Floor
import Mathlib.Algebra.ContinuedFractions.Basic
#align_import algebra.continued_fractions.computation.basic from "leanprover-community/mathlib"@"a7e36e48519ab281320c4d192da6a7b348ce40ad"
namespace GeneralizedContinuedFraction
-- Fix a carrier `K`.
variable (K : Type*)
structu... | Mathlib/Algebra/ContinuedFractions/Computation/Basic.lean | 159 | 161 | theorem stream_isSeq (v : K) : (IntFractPair.stream v).IsSeq := by |
intro _ hyp
simp [IntFractPair.stream, hyp]
| 2 | 7.389056 | 1 | 1 | 1 | 844 |
import Mathlib.Data.List.Cycle
import Mathlib.GroupTheory.Perm.Cycle.Type
import Mathlib.GroupTheory.Perm.List
#align_import group_theory.perm.cycle.concrete from "leanprover-community/mathlib"@"00638177efd1b2534fc5269363ebf42a7871df9a"
open Equiv Equiv.Perm List
variable {α : Type*}
namespace List
variable [D... | Mathlib/GroupTheory/Perm/Cycle/Concrete.lean | 120 | 123 | theorem formPerm_apply_mem_eq_next (hl : Nodup l) (x : α) (hx : x ∈ l) :
formPerm l x = next l x hx := by |
obtain ⟨k, rfl⟩ := get_of_mem hx
rw [next_get _ hl, formPerm_apply_get _ hl]
| 2 | 7.389056 | 1 | 1 | 18 | 1,030 |
import Mathlib.Analysis.Asymptotics.Asymptotics
import Mathlib.Analysis.Asymptotics.Theta
import Mathlib.Analysis.Normed.Order.Basic
#align_import analysis.asymptotics.asymptotic_equivalent from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
namespace Asymptotics
open Filter Function
... | Mathlib/Analysis/Asymptotics/AsymptoticEquivalent.lean | 89 | 91 | theorem IsEquivalent.isBigO_symm (h : u ~[l] v) : v =O[l] u := by |
convert h.isLittleO.right_isBigO_add
simp
| 2 | 7.389056 | 1 | 1.285714 | 7 | 1,354 |
import Batteries.Data.List.Lemmas
namespace List
universe u v
variable {α : Type u} {β : Type v}
@[simp] theorem eraseIdx_zero (l : List α) : eraseIdx l 0 = tail l := by cases l <;> rfl
theorem eraseIdx_eq_take_drop_succ :
∀ (l : List α) (i : Nat), l.eraseIdx i = l.take i ++ l.drop (i + 1)
| nil, _ => by s... | .lake/packages/batteries/Batteries/Data/List/EraseIdx.lean | 76 | 80 | theorem mem_eraseIdx_iff_get? {x : α} {l} {k} : x ∈ eraseIdx l k ↔ ∃ i ≠ k, l.get? i = x := by |
simp only [mem_eraseIdx_iff_get, Fin.exists_iff, exists_and_left, get_eq_iff, exists_prop]
refine exists_congr fun i => and_congr_right' <| and_iff_right_of_imp fun h => ?_
obtain ⟨h, -⟩ := get?_eq_some.1 h
exact h
| 4 | 54.59815 | 2 | 1.666667 | 3 | 1,821 |
import Mathlib.Analysis.Calculus.ContDiff.Bounds
import Mathlib.Analysis.Calculus.IteratedDeriv.Defs
import Mathlib.Analysis.Calculus.LineDeriv.Basic
import Mathlib.Analysis.LocallyConvex.WithSeminorms
import Mathlib.Analysis.Normed.Group.ZeroAtInfty
import Mathlib.Analysis.SpecialFunctions.Pow.Real
import Mathlib.Ana... | Mathlib/Analysis/Distribution/SchwartzSpace.lean | 103 | 106 | theorem decay (f : 𝓢(E, F)) (k n : ℕ) :
∃ C : ℝ, 0 < C ∧ ∀ x, ‖x‖ ^ k * ‖iteratedFDeriv ℝ n f x‖ ≤ C := by |
rcases f.decay' k n with ⟨C, hC⟩
exact ⟨max C 1, by positivity, fun x => (hC x).trans (le_max_left _ _)⟩
| 2 | 7.389056 | 1 | 1.25 | 8 | 1,308 |
import Mathlib.Algebra.Order.Interval.Set.Instances
import Mathlib.Order.Interval.Set.ProjIcc
import Mathlib.Topology.Instances.Real
#align_import topology.unit_interval from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
noncomputable section
open scoped Classical
open Topology Filter
... | Mathlib/Topology/UnitInterval.lean | 62 | 64 | theorem mem_iff_one_sub_mem {t : ℝ} : t ∈ I ↔ 1 - t ∈ I := by |
rw [mem_Icc, mem_Icc]
constructor <;> intro <;> constructor <;> linarith
| 2 | 7.389056 | 1 | 0.25 | 4 | 303 |
import Mathlib.Analysis.InnerProductSpace.Projection
import Mathlib.Analysis.NormedSpace.PiLp
import Mathlib.LinearAlgebra.FiniteDimensional
import Mathlib.LinearAlgebra.UnitaryGroup
#align_import analysis.inner_product_space.pi_L2 from "leanprover-community/mathlib"@"13bce9a6b6c44f6b4c91ac1c1d2a816e2533d395"
set_... | Mathlib/Analysis/InnerProductSpace/PiL2.lean | 140 | 143 | theorem EuclideanSpace.closedBall_zero_eq {n : Type*} [Fintype n] (r : ℝ) (hr : 0 ≤ r) :
Metric.closedBall (0 : EuclideanSpace ℝ n) r = {x | ∑ i, x i ^ 2 ≤ r ^ 2} := by |
ext
simp_rw [mem_setOf, mem_closedBall_zero_iff, norm_eq, norm_eq_abs, sq_abs, sqrt_le_left hr]
| 2 | 7.389056 | 1 | 1 | 4 | 996 |
import Mathlib.CategoryTheory.Limits.Shapes.ZeroMorphisms
import Mathlib.CategoryTheory.Limits.Shapes.Kernels
import Mathlib.CategoryTheory.Abelian.Basic
import Mathlib.CategoryTheory.Subobject.Lattice
import Mathlib.Order.Atoms
#align_import category_theory.simple from "leanprover-community/mathlib"@"4ed0bcaef698011... | Mathlib/CategoryTheory/Simple.lean | 103 | 107 | theorem mono_to_simple_zero_of_not_iso {X Y : C} [Simple Y] {f : X ⟶ Y} [Mono f]
(w : IsIso f → False) : f = 0 := by |
classical
by_contra h
exact w (isIso_of_mono_of_nonzero h)
| 3 | 20.085537 | 1 | 1.5 | 8 | 1,594 |
import Mathlib.Algebra.DualNumber
import Mathlib.Algebra.QuaternionBasis
import Mathlib.Data.Complex.Module
import Mathlib.LinearAlgebra.CliffordAlgebra.Conjugation
import Mathlib.LinearAlgebra.CliffordAlgebra.Star
import Mathlib.LinearAlgebra.QuadraticForm.Prod
#align_import linear_algebra.clifford_algebra.equivs fr... | Mathlib/LinearAlgebra/CliffordAlgebra/Equivs.lean | 182 | 185 | theorem toComplex_comp_ofComplex : toComplex.comp ofComplex = AlgHom.id ℝ ℂ := by |
ext1
dsimp only [AlgHom.comp_apply, Subtype.coe_mk, AlgHom.id_apply]
rw [ofComplex_I, toComplex_ι, one_smul]
| 3 | 20.085537 | 1 | 1.4 | 10 | 1,508 |
import Mathlib.MeasureTheory.Integral.Lebesgue
import Mathlib.Analysis.MeanInequalities
import Mathlib.Analysis.MeanInequalitiesPow
import Mathlib.MeasureTheory.Function.SpecialFunctions.Basic
#align_import measure_theory.integral.mean_inequalities from "leanprover-community/mathlib"@"13bf7613c96a9fd66a81b9020a82cad9... | Mathlib/MeasureTheory/Integral/MeanInequalities.lean | 110 | 130 | theorem lintegral_mul_le_Lp_mul_Lq_of_ne_zero_of_ne_top {p q : ℝ} (hpq : p.IsConjExponent q)
{f g : α → ℝ≥0∞} (hf : AEMeasurable f μ) (hf_nontop : (∫⁻ a, f a ^ p ∂μ) ≠ ⊤)
(hg_nontop : (∫⁻ a, g a ^ q ∂μ) ≠ ⊤) (hf_nonzero : (∫⁻ a, f a ^ p ∂μ) ≠ 0)
(hg_nonzero : (∫⁻ a, g a ^ q ∂μ) ≠ 0) :
(∫⁻ a, (f * g) a ∂... |
let npf := (∫⁻ c : α, f c ^ p ∂μ) ^ (1 / p)
let nqg := (∫⁻ c : α, g c ^ q ∂μ) ^ (1 / q)
calc
(∫⁻ a : α, (f * g) a ∂μ) =
∫⁻ a : α, (funMulInvSnorm f p μ * funMulInvSnorm g q μ) a * (npf * nqg) ∂μ := by
refine lintegral_congr fun a => ?_
rw [Pi.mul_apply, fun_eq_funMulInvSnorm_mul_snorm f h... | 16 | 8,886,110.520508 | 2 | 1.4 | 5 | 1,491 |
import Mathlib.CategoryTheory.Limits.Shapes.ZeroMorphisms
import Mathlib.CategoryTheory.Limits.Shapes.Kernels
import Mathlib.CategoryTheory.Abelian.Basic
import Mathlib.CategoryTheory.Subobject.Lattice
import Mathlib.Order.Atoms
#align_import category_theory.simple from "leanprover-community/mathlib"@"4ed0bcaef698011... | Mathlib/CategoryTheory/Simple.lean | 237 | 248 | theorem simple_of_isSimpleOrder_subobject (X : C) [IsSimpleOrder (Subobject X)] : Simple X := by |
constructor; intros Y f hf; constructor
· intro i
rw [Subobject.isIso_iff_mk_eq_top] at i
intro w
rw [← Subobject.mk_eq_bot_iff_zero] at w
exact IsSimpleOrder.bot_ne_top (w.symm.trans i)
· intro i
rcases IsSimpleOrder.eq_bot_or_eq_top (Subobject.mk f) with (h | h)
· rw [Subobject.mk_eq_bo... | 11 | 59,874.141715 | 2 | 1.5 | 8 | 1,594 |
import Mathlib.Order.UpperLower.Basic
import Mathlib.Data.Finset.Preimage
#align_import combinatorics.young.young_diagram from "leanprover-community/mathlib"@"59694bd07f0a39c5beccba34bd9f413a160782bf"
open Function
@[ext]
structure YoungDiagram where
cells : Finset (ℕ × ℕ)
isLowerSet : IsLowerSet (cel... | Mathlib/Combinatorics/Young/YoungDiagram.lean | 174 | 179 | theorem coe_bot : (⊥ : YoungDiagram).cells = (∅ : Set (ℕ × ℕ)) := by |
refine Set.eq_of_subset_of_subset ?_ ?_
· intros x h
simp? [mem_mk, Finset.coe_empty, Set.mem_empty_iff_false] at h says
simp only [cells_bot, Finset.coe_empty, Set.mem_empty_iff_false] at h
· simp only [cells_bot, Finset.coe_empty, Set.empty_subset]
| 5 | 148.413159 | 2 | 0.769231 | 13 | 683 |
import Mathlib.Algebra.Homology.ComplexShape
import Mathlib.CategoryTheory.Subobject.Limits
import Mathlib.CategoryTheory.GradedObject
import Mathlib.Algebra.Homology.ShortComplex.Basic
#align_import algebra.homology.homological_complex from "leanprover-community/mathlib"@"88bca0ce5d22ebfd9e73e682e51d60ea13b48347"
... | Mathlib/Algebra/Homology/HomologicalComplex.lean | 177 | 182 | theorem next_nat_zero : (ComplexShape.down ℕ).next 0 = 0 := by |
classical
refine dif_neg ?_
push_neg
intro
apply Nat.noConfusion
| 5 | 148.413159 | 2 | 1.4 | 10 | 1,494 |
import Mathlib.Combinatorics.SimpleGraph.Clique
import Mathlib.Data.ENat.Lattice
import Mathlib.Data.Nat.Lattice
import Mathlib.Data.Setoid.Partition
import Mathlib.Order.Antichain
#align_import combinatorics.simple_graph.coloring from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
open ... | Mathlib/Combinatorics/SimpleGraph/Coloring.lean | 114 | 119 | theorem Coloring.card_colorClasses_le [Fintype α] [Fintype C.colorClasses] :
Fintype.card C.colorClasses ≤ Fintype.card α := by |
simp [colorClasses]
-- Porting note: brute force instance declaration `[Fintype (Setoid.classes (Setoid.ker C))]`
haveI : Fintype (Setoid.classes (Setoid.ker C)) := by assumption
convert Setoid.card_classes_ker_le C
| 4 | 54.59815 | 2 | 2 | 2 | 2,377 |
import Mathlib.Algebra.Algebra.Subalgebra.Basic
import Mathlib.Data.Set.UnionLift
#align_import algebra.algebra.subalgebra.basic from "leanprover-community/mathlib"@"b915e9392ecb2a861e1e766f0e1df6ac481188ca"
namespace Subalgebra
open Algebra
variable {R A B : Type*} [CommSemiring R] [Semiring A] [Algebra R A] [... | Mathlib/Algebra/Algebra/Subalgebra/Directed.lean | 90 | 93 | theorem iSupLift_mk {i : ι} (x : K i) (hx : (x : A) ∈ T) :
iSupLift K dir f hf T hT ⟨x, hx⟩ = f i x := by |
dsimp [iSupLift, inclusion]
rw [Set.iUnionLift_mk]
| 2 | 7.389056 | 1 | 0.75 | 4 | 678 |
import Mathlib.Data.Vector.Basic
set_option autoImplicit true
namespace Vector
def snoc : Vector α n → α → Vector α (n+1) :=
fun xs x => append xs (x ::ᵥ Vector.nil)
section Simp
variable (xs : Vector α n)
@[simp]
theorem snoc_cons : (x ::ᵥ xs).snoc y = x ::ᵥ (xs.snoc y) :=
rfl
@[simp]
theorem snoc_nil... | Mathlib/Data/Vector/Snoc.lean | 54 | 62 | theorem replicate_succ_to_snoc (val : α) :
replicate (n+1) val = (replicate n val).snoc val := by |
clear xs
induction n with
| zero => rfl
| succ n ih =>
rw [replicate_succ]
conv => rhs; rw [replicate_succ]
rw [snoc_cons, ih]
| 7 | 1,096.633158 | 2 | 1.666667 | 3 | 1,811 |
import Mathlib.Order.Interval.Set.UnorderedInterval
import Mathlib.Algebra.Order.Interval.Set.Monoid
import Mathlib.Data.Set.Pointwise.Basic
import Mathlib.Algebra.Order.Field.Basic
import Mathlib.Algebra.Order.Group.MinMax
#align_import data.set.pointwise.interval from "leanprover-community/mathlib"@"2196ab363eb097c... | Mathlib/Data/Set/Pointwise/Interval.lean | 104 | 107 | theorem Ioi_mul_Ici_subset' (a b : α) : Ioi a * Ici b ⊆ Ioi (a * b) := by |
haveI := covariantClass_le_of_lt
rintro x ⟨y, hya, z, hzb, rfl⟩
exact mul_lt_mul_of_lt_of_le hya hzb
| 3 | 20.085537 | 1 | 0.37931 | 29 | 381 |
import Mathlib.Algebra.BigOperators.Fin
import Mathlib.Algebra.Polynomial.Degree.Lemmas
#align_import data.polynomial.erase_lead from "leanprover-community/mathlib"@"fa256f00ce018e7b40e1dc756e403c86680bf448"
noncomputable section
open Polynomial
open Polynomial Finset
namespace Polynomial
variable {R : Type*}... | Mathlib/Algebra/Polynomial/EraseLead.lean | 95 | 98 | theorem lt_natDegree_of_mem_eraseLead_support {a : ℕ} (h : a ∈ (eraseLead f).support) :
a < f.natDegree := by |
rw [eraseLead_support, mem_erase] at h
exact (le_natDegree_of_mem_supp a h.2).lt_of_ne h.1
| 2 | 7.389056 | 1 | 0.5 | 14 | 465 |
import Mathlib.CategoryTheory.Balanced
import Mathlib.CategoryTheory.LiftingProperties.Basic
#align_import category_theory.limits.shapes.strong_epi from "leanprover-community/mathlib"@"32253a1a1071173b33dc7d6a218cf722c6feb514"
universe v u
namespace CategoryTheory
variable {C : Type u} [Category.{v} C]
variable... | Mathlib/CategoryTheory/Limits/Shapes/StrongEpi.lean | 127 | 135 | theorem strongMono_of_strongMono [StrongMono (f ≫ g)] : StrongMono f :=
{ mono := mono_of_mono f g
rlp := fun {X Y} z => by
intros
constructor
intro u v sq
have h₀ : u ≫ f ≫ g = z ≫ v ≫ g := by |
rw [← Category.assoc, eq_whisker sq.w, Category.assoc]
exact CommSq.HasLift.mk' ⟨(CommSq.mk h₀).lift, by simp, by simp [← cancel_epi z, sq.w]⟩ }
| 2 | 7.389056 | 1 | 1.428571 | 7 | 1,511 |
import Mathlib.MeasureTheory.Integral.SetIntegral
import Mathlib.MeasureTheory.Measure.Lebesgue.Basic
import Mathlib.MeasureTheory.Measure.Haar.Unique
#align_import measure_theory.measure.lebesgue.integral from "leanprover-community/mathlib"@"fd5edc43dc4f10b85abfe544b88f82cf13c5f844"
open Set Filter MeasureTheory... | Mathlib/MeasureTheory/Measure/Lebesgue/Integral.lean | 102 | 127 | theorem integral_comp_abs {f : ℝ → ℝ} :
∫ x, f |x| = 2 * ∫ x in Ioi (0:ℝ), f x := by |
have eq : ∫ (x : ℝ) in Ioi 0, f |x| = ∫ (x : ℝ) in Ioi 0, f x := by
refine setIntegral_congr measurableSet_Ioi (fun _ hx => ?_)
rw [abs_eq_self.mpr (le_of_lt (by exact hx))]
by_cases hf : IntegrableOn (fun x => f |x|) (Ioi 0)
· have int_Iic : IntegrableOn (fun x ↦ f |x|) (Iic 0) := by
rw [← Measure... | 24 | 26,489,122,129.84347 | 2 | 1.8 | 5 | 1,894 |
import Mathlib.Data.Real.NNReal
import Mathlib.RingTheory.Valuation.Basic
noncomputable section
open Function Multiplicative
open scoped NNReal
variable {R : Type*} [Ring R] {Γ₀ : Type*} [LinearOrderedCommGroupWithZero Γ₀]
namespace Valuation
class RankOne (v : Valuation R Γ₀) where
hom : Γ₀ →*₀ ℝ≥0
st... | Mathlib/RingTheory/Valuation/RankOne.lean | 67 | 69 | theorem unit_ne_one : unit v ≠ 1 := by |
rw [Ne, ← Units.eq_iff, Units.val_one]
exact ((nontrivial v).choose_spec ).2
| 2 | 7.389056 | 1 | 1.5 | 2 | 1,589 |
import Mathlib.Data.Vector.Basic
import Mathlib.Data.Vector.Snoc
set_option autoImplicit true
namespace Vector
section Fold
section UnusedInput
variable {xs : Vector α n} {ys : Vector β n}
@[simp]
| Mathlib/Data/Vector/MapLemmas.lean | 342 | 347 | theorem mapAccumr₂_unused_input_left [Inhabited α] (f : α → β → σ → σ × γ)
(h : ∀ a b s, f default b s = f a b s) :
mapAccumr₂ f xs ys s = mapAccumr (fun b s => f default b s) ys s := by |
induction xs, ys using Vector.revInductionOn₂ generalizing s with
| nil => rfl
| snoc xs ys x y ih => simp [h x y s, ih]
| 3 | 20.085537 | 1 | 0.333333 | 24 | 337 |
import Mathlib.Analysis.Seminorm
import Mathlib.Topology.Algebra.Equicontinuity
import Mathlib.Topology.MetricSpace.Equicontinuity
import Mathlib.Topology.Algebra.FilterBasis
import Mathlib.Topology.Algebra.Module.LocallyConvex
#align_import analysis.locally_convex.with_seminorms from "leanprover-community/mathlib"@"... | Mathlib/Analysis/LocallyConvex/WithSeminorms.lean | 121 | 127 | theorem basisSets_add (U) (hU : U ∈ p.basisSets) :
∃ V ∈ p.basisSets, V + V ⊆ U := by |
rcases p.basisSets_iff.mp hU with ⟨s, r, hr, hU⟩
use (s.sup p).ball 0 (r / 2)
refine ⟨p.basisSets_mem s (div_pos hr zero_lt_two), ?_⟩
refine Set.Subset.trans (ball_add_ball_subset (s.sup p) (r / 2) (r / 2) 0 0) ?_
rw [hU, add_zero, add_halves']
| 5 | 148.413159 | 2 | 1.272727 | 11 | 1,349 |
import Mathlib.Algebra.Polynomial.Basic
#align_import data.polynomial.monomial from "leanprover-community/mathlib"@"220f71ba506c8958c9b41bd82226b3d06b0991e8"
noncomputable section
namespace Polynomial
open Polynomial
universe u
variable {R : Type u} {a b : R} {m n : ℕ}
variable [Semiring R] {p q r : R[X]}
th... | Mathlib/Algebra/Polynomial/Monomial.lean | 39 | 56 | theorem card_support_le_one_iff_monomial {f : R[X]} :
Finset.card f.support ≤ 1 ↔ ∃ n a, f = monomial n a := by |
constructor
· intro H
rw [Finset.card_le_one_iff_subset_singleton] at H
rcases H with ⟨n, hn⟩
refine ⟨n, f.coeff n, ?_⟩
ext i
by_cases hi : i = n
· simp [hi, coeff_monomial]
· have : f.coeff i = 0 := by
rw [← not_mem_support_iff]
exact fun hi' => hi (Finset.mem_singleton... | 16 | 8,886,110.520508 | 2 | 1.666667 | 3 | 1,753 |
import Mathlib.Data.Nat.Choose.Basic
import Mathlib.Data.Sym.Sym2
namespace List
variable {α : Type*}
section Sym2
protected def sym2 : List α → List (Sym2 α)
| [] => []
| x :: xs => (x :: xs).map (fun y => s(x, y)) ++ xs.sym2
theorem mem_sym2_cons_iff {x : α} {xs : List α} {z : Sym2 α} :
z ∈ (x :: xs)... | Mathlib/Data/List/Sym.lean | 63 | 66 | theorem right_mem_of_mk_mem_sym2 {xs : List α} {a b : α}
(h : s(a, b) ∈ xs.sym2) : b ∈ xs := by |
rw [Sym2.eq_swap] at h
exact left_mem_of_mk_mem_sym2 h
| 2 | 7.389056 | 1 | 1.444444 | 9 | 1,529 |
import Mathlib.Algebra.Module.BigOperators
import Mathlib.Data.Fintype.BigOperators
import Mathlib.LinearAlgebra.AffineSpace.AffineMap
import Mathlib.LinearAlgebra.AffineSpace.AffineSubspace
import Mathlib.LinearAlgebra.Finsupp
import Mathlib.Tactic.FinCases
#align_import linear_algebra.affine_space.combination from ... | Mathlib/LinearAlgebra/AffineSpace/Combination.lean | 109 | 118 | theorem weightedVSubOfPoint_eq_of_sum_eq_zero (w : ι → k) (p : ι → P) (h : ∑ i ∈ s, w i = 0)
(b₁ b₂ : P) : s.weightedVSubOfPoint p b₁ w = s.weightedVSubOfPoint p b₂ w := by |
apply eq_of_sub_eq_zero
rw [weightedVSubOfPoint_apply, weightedVSubOfPoint_apply, ← sum_sub_distrib]
conv_lhs =>
congr
· skip
· ext
rw [← smul_sub, vsub_sub_vsub_cancel_left]
rw [← sum_smul, h, zero_smul]
| 8 | 2,980.957987 | 2 | 1.083333 | 12 | 1,183 |
import Mathlib.Algebra.Polynomial.AlgebraMap
import Mathlib.Algebra.Polynomial.BigOperators
import Mathlib.Algebra.Polynomial.Degree.Lemmas
import Mathlib.Algebra.Polynomial.Div
#align_import data.polynomial.ring_division from "leanprover-community/mathlib"@"8efcf8022aac8e01df8d302dcebdbc25d6a886c8"
noncomputable ... | Mathlib/Algebra/Polynomial/RingDivision.lean | 72 | 80 | theorem smul_modByMonic (c : R) (p : R[X]) : c • p %ₘ q = c • (p %ₘ q) := by |
by_cases hq : q.Monic
· cases' subsingleton_or_nontrivial R with hR hR
· simp only [eq_iff_true_of_subsingleton]
· exact
(div_modByMonic_unique (c • (p /ₘ q)) (c • (p %ₘ q)) hq
⟨by rw [mul_smul_comm, ← smul_add, modByMonic_add_div p hq],
(degree_smul_le _ _).trans_lt (degree_mod... | 8 | 2,980.957987 | 2 | 1.5 | 32 | 1,561 |
import Mathlib.Analysis.SpecialFunctions.Trigonometric.Arctan
import Mathlib.Geometry.Euclidean.Angle.Unoriented.Affine
#align_import geometry.euclidean.angle.unoriented.right_angle from "leanprover-community/mathlib"@"46b633fd842bef9469441c0209906f6dddd2b4f5"
noncomputable section
open scoped EuclideanGeometry
... | Mathlib/Geometry/Euclidean/Angle/Unoriented/RightAngle.lean | 56 | 59 | theorem norm_sub_sq_eq_norm_sq_add_norm_sq_iff_angle_eq_pi_div_two (x y : V) :
‖x - y‖ * ‖x - y‖ = ‖x‖ * ‖x‖ + ‖y‖ * ‖y‖ ↔ angle x y = π / 2 := by |
rw [norm_sub_sq_eq_norm_sq_add_norm_sq_iff_real_inner_eq_zero]
exact inner_eq_zero_iff_angle_eq_pi_div_two x y
| 2 | 7.389056 | 1 | 1.5 | 6 | 1,630 |
import Mathlib.Topology.Separation
import Mathlib.Topology.NoetherianSpace
#align_import topology.quasi_separated from "leanprover-community/mathlib"@"5dc6092d09e5e489106865241986f7f2ad28d4c8"
open TopologicalSpace
variable {α β : Type*} [TopologicalSpace α] [TopologicalSpace β] {f : α → β}
def IsQuasiSeparate... | Mathlib/Topology/QuasiSeparated.lean | 99 | 103 | theorem isQuasiSeparated_iff_quasiSeparatedSpace (s : Set α) (hs : IsOpen s) :
IsQuasiSeparated s ↔ QuasiSeparatedSpace s := by |
rw [← isQuasiSeparated_univ_iff]
convert (hs.openEmbedding_subtype_val.isQuasiSeparated_iff (s := Set.univ)).symm
simp
| 3 | 20.085537 | 1 | 1.4 | 5 | 1,482 |
import Mathlib.Algebra.Polynomial.Degree.Lemmas
open Polynomial
namespace Mathlib.Tactic.ComputeDegree
section recursion_lemmas
variable {R : Type*}
section semiring
variable [Semiring R]
theorem natDegree_C_le (a : R) : natDegree (C a) ≤ 0 := (natDegree_C a).le
theorem natDegree_natCast_le (n : ℕ) : natDeg... | Mathlib/Tactic/ComputeDegree.lean | 150 | 155 | theorem natDegree_eq_of_le_of_coeff_ne_zero' {deg m o : ℕ} {c : R} {p : R[X]}
(h_natDeg_le : natDegree p ≤ m) (coeff_eq : coeff p o = c)
(coeff_ne_zero : c ≠ 0) (deg_eq_deg : m = deg) (coeff_eq_deg : o = deg) :
natDegree p = deg := by |
subst coeff_eq deg_eq_deg coeff_eq_deg
exact natDegree_eq_of_le_of_coeff_ne_zero ‹_› ‹_›
| 2 | 7.389056 | 1 | 1.4 | 5 | 1,474 |
import Mathlib.LinearAlgebra.TensorAlgebra.Basic
import Mathlib.LinearAlgebra.TensorPower
#align_import linear_algebra.tensor_algebra.to_tensor_power from "leanprover-community/mathlib"@"d97a0c9f7a7efe6d76d652c5a6b7c9c634b70e0a"
suppress_compilation
open scoped DirectSum TensorProduct
variable {R M : Type*} [Com... | Mathlib/LinearAlgebra/TensorAlgebra/ToTensorPower.lean | 68 | 72 | theorem toTensorAlgebra_galgebra_toFun (r : R) :
TensorPower.toTensorAlgebra (DirectSum.GAlgebra.toFun (R := R) (A := fun n => ⨂[R]^n M) r) =
algebraMap _ _ r := by |
rw [TensorPower.galgebra_toFun_def, TensorPower.algebraMap₀_eq_smul_one, LinearMap.map_smul,
TensorPower.toTensorAlgebra_gOne, Algebra.algebraMap_eq_smul_one]
| 2 | 7.389056 | 1 | 1.5 | 2 | 1,619 |
import Mathlib.CategoryTheory.EqToHom
import Mathlib.CategoryTheory.Quotient
import Mathlib.Combinatorics.Quiver.Path
#align_import category_theory.path_category from "leanprover-community/mathlib"@"c6dd521ebdce53bb372c527569dd7c25de53a08b"
universe v₁ v₂ u₁ u₂
namespace CategoryTheory
section
def Paths (V : ... | Mathlib/CategoryTheory/PathCategory.lean | 124 | 135 | theorem ext_functor {C} [Category C] {F G : Paths V ⥤ C} (h_obj : F.obj = G.obj)
(h : ∀ (a b : V) (e : a ⟶ b), F.map e.toPath =
eqToHom (congr_fun h_obj a) ≫ G.map e.toPath ≫ eqToHom (congr_fun h_obj.symm b)) :
F = G := by |
fapply Functor.ext
· intro X
rw [h_obj]
· intro X Y f
induction' f with Y' Z' g e ih
· erw [F.map_id, G.map_id, Category.id_comp, eqToHom_trans, eqToHom_refl]
· erw [F.map_comp g (Quiver.Hom.toPath e), G.map_comp g (Quiver.Hom.toPath e), ih, h]
simp only [Category.id_comp, eqToHom_refl, eqT... | 8 | 2,980.957987 | 2 | 1.75 | 4 | 1,866 |
import Mathlib.Data.Finsupp.Defs
#align_import data.finsupp.fin from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce47ef47c"
noncomputable section
namespace Finsupp
variable {n : ℕ} (i : Fin n) {M : Type*} [Zero M] (y : M) (t : Fin (n + 1) →₀ M) (s : Fin n →₀ M)
def tail (s : Fin (n + 1) →₀ ... | Mathlib/Data/Finsupp/Fin.lean | 89 | 92 | 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 ?_
rw [h', c, Finsupp.cons_zero_zero]
| 3 | 20.085537 | 1 | 1.4 | 5 | 1,500 |
import Mathlib.LinearAlgebra.Dual
open Function Module
variable (R M N : Type*) [CommRing R] [AddCommGroup M] [Module R M] [AddCommGroup N] [Module R N]
structure PerfectPairing :=
toLin : M →ₗ[R] N →ₗ[R] R
bijectiveLeft : Bijective toLin
bijectiveRight : Bijective toLin.flip
attribute [nolint docBlame] P... | Mathlib/LinearAlgebra/PerfectPairing.lean | 85 | 89 | theorem apply_apply_toDualRight_symm (x : M) (f : Dual R M) :
(p x) (p.toDualRight.symm f) = f x := by |
have h := LinearEquiv.apply_symm_apply p.toDualRight f
rw [toDualRight_apply] at h
exact congrFun (congrArg DFunLike.coe h) x
| 3 | 20.085537 | 1 | 1 | 6 | 845 |
import Mathlib.Data.Set.Lattice
import Mathlib.Order.Directed
#align_import data.set.Union_lift from "leanprover-community/mathlib"@"5a4ea8453f128345f73cc656e80a49de2a54f481"
variable {α : Type*} {ι β : Sort _}
namespace Set
section UnionLift
@[nolint unusedArguments]
noncomputable def iUnionLift (S : ι → Set... | Mathlib/Data/Set/UnionLift.lean | 96 | 100 | theorem iUnionLift_const (c : T) (ci : ∀ i, S i) (hci : ∀ i, (ci i : α) = c) (cβ : β)
(h : ∀ i, f i (ci i) = cβ) : iUnionLift S f hf T hT c = cβ := by |
let ⟨i, hi⟩ := Set.mem_iUnion.1 (hT c.prop)
have : ci i = ⟨c, hi⟩ := Subtype.ext (hci i)
rw [iUnionLift_of_mem _ hi, ← this, h]
| 3 | 20.085537 | 1 | 1.4 | 5 | 1,503 |
import Mathlib.Algebra.GCDMonoid.Basic
import Mathlib.Data.Multiset.FinsetOps
import Mathlib.Data.Multiset.Fold
#align_import algebra.gcd_monoid.multiset from "leanprover-community/mathlib"@"f694c7dead66f5d4c80f446c796a5aad14707f0e"
namespace Multiset
variable {α : Type*} [CancelCommMonoidWithZero α] [NormalizedG... | Mathlib/Algebra/GCDMonoid/Multiset.lean | 173 | 182 | theorem gcd_eq_zero_iff (s : Multiset α) : s.gcd = 0 ↔ ∀ x : α, x ∈ s → x = 0 := by |
constructor
· intro h x hx
apply eq_zero_of_zero_dvd
rw [← h]
apply gcd_dvd hx
· refine s.induction_on ?_ ?_
· simp
intro a s sgcd h
simp [h a (mem_cons_self a s), sgcd fun x hx ↦ h x (mem_cons_of_mem hx)]
| 9 | 8,103.083928 | 2 | 1.333333 | 9 | 1,390 |
import Mathlib.MeasureTheory.Function.LpSeminorm.Basic
import Mathlib.MeasureTheory.Integral.MeanInequalities
#align_import measure_theory.function.lp_seminorm from "leanprover-community/mathlib"@"c4015acc0a223449d44061e27ddac1835a3852b9"
open Filter
open scoped ENNReal Topology
namespace MeasureTheory
variable ... | Mathlib/MeasureTheory/Function/LpSeminorm/TriangleInequality.lean | 87 | 94 | theorem LpAddConst_lt_top (p : ℝ≥0∞) : LpAddConst p < ∞ := by |
rw [LpAddConst]
split_ifs with h
· apply ENNReal.rpow_lt_top_of_nonneg _ ENNReal.two_ne_top
simp only [one_div, sub_nonneg]
apply one_le_inv (ENNReal.toReal_pos h.1.ne' (h.2.trans ENNReal.one_lt_top).ne)
simpa using ENNReal.toReal_mono ENNReal.one_ne_top h.2.le
· exact ENNReal.one_lt_top
| 7 | 1,096.633158 | 2 | 1.5 | 8 | 1,656 |
import Mathlib.Order.Filter.Basic
import Mathlib.Order.Filter.CountableInter
import Mathlib.SetTheory.Cardinal.Ordinal
import Mathlib.SetTheory.Cardinal.Cofinality
open Set Filter Cardinal
universe u
variable {ι : Type u} {α β : Type u} {c : Cardinal.{u}}
class CardinalInterFilter (l : Filter α) (c : Cardinal.{... | Mathlib/Order/Filter/CardinalInter.lean | 102 | 105 | theorem eventually_cardinal_forall {p : α → ι → Prop} (hic : #ι < c) :
(∀ᶠ x in l, ∀ i, p x i) ↔ ∀ i, ∀ᶠ x in l, p x i := by |
simp only [Filter.Eventually, setOf_forall]
exact cardinal_iInter_mem hic
| 2 | 7.389056 | 1 | 1 | 6 | 1,099 |
import Mathlib.Algebra.Group.Basic
import Mathlib.Algebra.Group.Hom.Defs
#align_import algebra.hom.group from "leanprover-community/mathlib"@"a148d797a1094ab554ad4183a4ad6f130358ef64"
-- `NeZero` cannot be additivised, hence its theory should be developed outside of the
-- `Algebra.Group` folder.
assert_not_exists... | Mathlib/Algebra/Group/Hom/Basic.lean | 110 | 113 | theorem comp_mul [Mul M] [CommSemigroup N] [CommSemigroup P] (g : N →ₙ* P) (f₁ f₂ : M →ₙ* N) :
g.comp (f₁ * f₂) = g.comp f₁ * g.comp f₂ := by |
ext
simp only [mul_apply, Function.comp_apply, map_mul, coe_comp]
| 2 | 7.389056 | 1 | 1 | 2 | 1,128 |
import Mathlib.Control.Applicative
import Mathlib.Control.Traversable.Basic
import Mathlib.Data.List.Forall2
import Mathlib.Data.Set.Functor
#align_import control.traversable.instances from "leanprover-community/mathlib"@"18a5306c091183ac90884daa9373fa3b178e8607"
universe u v
section Option
open Functor
variab... | Mathlib/Control/Traversable/Instances.lean | 47 | 51 | theorem Option.naturality {α β} (f : α → F β) (x : Option α) :
η (Option.traverse f x) = Option.traverse (@η _ ∘ f) x := by |
-- Porting note: added `ApplicativeTransformation` theorems
cases' x with x <;> simp! [*, functor_norm, ApplicativeTransformation.preserves_map,
ApplicativeTransformation.preserves_seq, ApplicativeTransformation.preserves_pure]
| 3 | 20.085537 | 1 | 0.25 | 4 | 301 |
import Mathlib.Algebra.MonoidAlgebra.Support
import Mathlib.Algebra.Polynomial.Basic
import Mathlib.Algebra.Regular.Basic
import Mathlib.Data.Nat.Choose.Sum
#align_import data.polynomial.coeff from "leanprover-community/mathlib"@"2651125b48fc5c170ab1111afd0817c903b1fc6c"
set_option linter.uppercaseLean3 false
no... | Mathlib/Algebra/Polynomial/Coeff.lean | 130 | 134 | theorem coeff_mul (p q : R[X]) (n : ℕ) :
coeff (p * q) n = ∑ x ∈ antidiagonal n, coeff p x.1 * coeff q x.2 := by |
rcases p with ⟨p⟩; rcases q with ⟨q⟩
simp_rw [← ofFinsupp_mul, coeff]
exact AddMonoidAlgebra.mul_apply_antidiagonal p q n _ Finset.mem_antidiagonal
| 3 | 20.085537 | 1 | 1.125 | 8 | 1,203 |
import Mathlib.Algebra.Polynomial.BigOperators
import Mathlib.Algebra.Polynomial.Derivative
import Mathlib.Data.Nat.Choose.Cast
import Mathlib.Data.Nat.Choose.Vandermonde
import Mathlib.Tactic.FieldSimp
#align_import data.polynomial.hasse_deriv from "leanprover-community/mathlib"@"a148d797a1094ab554ad4183a4ad6f130358... | Mathlib/Algebra/Polynomial/HasseDeriv.lean | 93 | 97 | theorem hasseDeriv_eq_zero_of_lt_natDegree (p : R[X]) (n : ℕ) (h : p.natDegree < n) :
hasseDeriv n p = 0 := by |
rw [hasseDeriv_apply, sum_def]
refine Finset.sum_eq_zero fun x hx => ?_
simp [Nat.choose_eq_zero_of_lt ((le_natDegree_of_mem_supp _ hx).trans_lt h)]
| 3 | 20.085537 | 1 | 1.2 | 10 | 1,278 |
import Mathlib.Algebra.Order.Group.Basic
import Mathlib.Algebra.Order.Ring.Abs
import Mathlib.Algebra.Order.Ring.Basic
import Mathlib.Algebra.Ring.Nat
import Mathlib.Data.ZMod.Basic
import Mathlib.GroupTheory.OrderOfElement
import Mathlib.RingTheory.Fintype
import Mathlib.Tactic.IntervalCases
#align_import number_the... | Mathlib/NumberTheory/LucasLehmer.lean | 148 | 151 | theorem sMod_lt (p : ℕ) (hp : p ≠ 0) (i : ℕ) : sMod p i < 2 ^ p - 1 := by |
rw [← sMod_mod]
refine (Int.emod_lt _ (mersenne_int_ne_zero p hp)).trans_eq ?_
exact abs_of_nonneg (mersenne_int_pos hp).le
| 3 | 20.085537 | 1 | 1 | 7 | 964 |
import Mathlib.Algebra.Regular.Basic
import Mathlib.LinearAlgebra.Matrix.MvPolynomial
import Mathlib.LinearAlgebra.Matrix.Polynomial
import Mathlib.RingTheory.Polynomial.Basic
#align_import linear_algebra.matrix.adjugate from "leanprover-community/mathlib"@"a99f85220eaf38f14f94e04699943e185a5e1d1a"
namespace Matr... | Mathlib/LinearAlgebra/Matrix/Adjugate.lean | 173 | 177 | theorem cramer_submatrix_equiv (A : Matrix m m α) (e : n ≃ m) (b : n → α) :
cramer (A.submatrix e e) b = cramer A (b ∘ e.symm) ∘ e := by |
ext i
simp_rw [Function.comp_apply, cramer_apply, updateColumn_submatrix_equiv,
det_submatrix_equiv_self e, Function.comp]
| 3 | 20.085537 | 1 | 1.222222 | 9 | 1,297 |
import Mathlib.Control.Bitraversable.Basic
#align_import control.bitraversable.lemmas from "leanprover-community/mathlib"@"58581d0fe523063f5651df0619be2bf65012a94a"
universe u
variable {t : Type u → Type u → Type u} [Bitraversable t]
variable {β : Type u}
namespace Bitraversable
open Functor LawfulApplicative
... | Mathlib/Control/Bitraversable/Lemmas.lean | 72 | 75 | theorem comp_tfst {α₀ α₁ α₂ β} (f : α₀ → F α₁) (f' : α₁ → G α₂) (x : t α₀ β) :
Comp.mk (tfst f' <$> tfst f x) = tfst (Comp.mk ∘ map f' ∘ f) x := by |
rw [← comp_bitraverse]
simp only [Function.comp, tfst, map_pure, Pure.pure]
| 2 | 7.389056 | 1 | 0.666667 | 6 | 606 |
import Mathlib.Algebra.MvPolynomial.Funext
import Mathlib.Algebra.Ring.ULift
import Mathlib.RingTheory.WittVector.Basic
#align_import ring_theory.witt_vector.is_poly from "leanprover-community/mathlib"@"48fb5b5280e7c81672afc9524185ae994553ebf4"
namespace WittVector
universe u
variable {p : ℕ} {R S : Type u} {σ id... | Mathlib/RingTheory/WittVector/IsPoly.lean | 114 | 122 | theorem poly_eq_of_wittPolynomial_bind_eq' [Fact p.Prime] (f g : ℕ → MvPolynomial (idx × ℕ) ℤ)
(h : ∀ n, bind₁ f (wittPolynomial p _ n) = bind₁ g (wittPolynomial p _ n)) : f = g := by |
ext1 n
apply MvPolynomial.map_injective (Int.castRingHom ℚ) Int.cast_injective
rw [← Function.funext_iff] at h
replace h :=
congr_arg (fun fam => bind₁ (MvPolynomial.map (Int.castRingHom ℚ) ∘ fam) (xInTermsOfW p ℚ n)) h
simpa only [Function.comp, map_bind₁, map_wittPolynomial, ← bind₁_bind₁,
bind₁_wi... | 7 | 1,096.633158 | 2 | 2 | 3 | 2,029 |
import Mathlib.Algebra.Quotient
import Mathlib.Algebra.Group.Subgroup.Actions
import Mathlib.Algebra.Group.Subgroup.MulOpposite
import Mathlib.GroupTheory.GroupAction.Basic
import Mathlib.SetTheory.Cardinal.Finite
#align_import group_theory.coset from "leanprover-community/mathlib"@"f7fc89d5d5ff1db2d1242c7bb0e9062ce4... | Mathlib/GroupTheory/Coset.lean | 302 | 308 | theorem leftRel_apply {x y : α} : @Setoid.r _ (leftRel s) x y ↔ x⁻¹ * y ∈ s :=
calc
(∃ a : s.op, y * MulOpposite.unop a = x) ↔ ∃ a : s, y * a = x :=
s.equivOp.symm.exists_congr_left
_ ↔ ∃ a : s, x⁻¹ * y = a⁻¹ := by |
simp only [inv_mul_eq_iff_eq_mul, Subgroup.coe_inv, eq_mul_inv_iff_mul_eq]
_ ↔ x⁻¹ * y ∈ s := by simp [exists_inv_mem_iff_exists_mem]
| 2 | 7.389056 | 1 | 0.25 | 4 | 295 |
import Mathlib.Algebra.BigOperators.Finprod
import Mathlib.SetTheory.Ordinal.Basic
import Mathlib.Topology.ContinuousFunction.Algebra
import Mathlib.Topology.Compactness.Paracompact
import Mathlib.Topology.ShrinkingLemma
import Mathlib.Topology.UrysohnsLemma
#align_import topology.partition_of_unity from "leanprover-... | Mathlib/Topology/PartitionOfUnity.lean | 297 | 301 | theorem exists_finset_nhd (ρ : PartitionOfUnity ι X univ) (x₀ : X) :
∃ I : Finset ι, ∀ᶠ x in 𝓝 x₀, ∑ i ∈ I, ρ i x = 1 ∧ support (ρ · x) ⊆ I := by |
rcases ρ.exists_finset_nhd' x₀ with ⟨I, H⟩
use I
rwa [nhdsWithin_univ, ← eventually_and] at H
| 3 | 20.085537 | 1 | 1.3 | 10 | 1,365 |
import Mathlib.Analysis.SpecialFunctions.ExpDeriv
#align_import analysis.ODE.gronwall from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
variable {E : Type*} [NormedAddCommGroup E] [NormedSpace ℝ E] {F : Type*} [NormedAddCommGroup F]
[NormedSpace ℝ F]
open Metric Set Asymptotics Fil... | Mathlib/Analysis/ODE/Gronwall.lean | 86 | 89 | theorem gronwallBound_ε0 (δ K x : ℝ) : gronwallBound δ K 0 x = δ * exp (K * x) := by |
by_cases hK : K = 0
· simp only [gronwallBound_K0, hK, zero_mul, exp_zero, add_zero, mul_one]
· simp only [gronwallBound_of_K_ne_0 hK, zero_div, zero_mul, add_zero]
| 3 | 20.085537 | 1 | 1.428571 | 7 | 1,514 |
import Mathlib.Combinatorics.SimpleGraph.Init
import Mathlib.Data.Rel
import Mathlib.Data.Set.Finite
import Mathlib.Data.Sym.Sym2
#align_import combinatorics.simple_graph.basic from "leanprover-community/mathlib"@"3365b20c2ffa7c35e47e5209b89ba9abdddf3ffe"
-- Porting note: using `aesop` for automation
-- Porting n... | Mathlib/Combinatorics/SimpleGraph/Basic.lean | 188 | 190 | theorem ne_of_adj (h : G.Adj a b) : a ≠ b := by |
rintro rfl
exact G.irrefl h
| 2 | 7.389056 | 1 | 1 | 1 | 1,149 |
import Mathlib.Topology.Sets.Opens
#align_import topology.local_at_target from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
open TopologicalSpace Set Filter
open Topology Filter
variable {α β : Type*} [TopologicalSpace α] [TopologicalSpace β] {f : α → β}
variable {s : Set β} {ι : Ty... | Mathlib/Topology/LocalAtTarget.lean | 29 | 34 | theorem Set.restrictPreimage_inducing (s : Set β) (h : Inducing f) :
Inducing (s.restrictPreimage f) := by |
simp_rw [← inducing_subtype_val.of_comp_iff, inducing_iff_nhds, restrictPreimage,
MapsTo.coe_restrict, restrict_eq, ← @Filter.comap_comap _ _ _ _ _ f, Function.comp_apply] at h ⊢
intro a
rw [← h, ← inducing_subtype_val.nhds_eq_comap]
| 4 | 54.59815 | 2 | 1.714286 | 7 | 1,842 |
import Mathlib.Algebra.Algebra.Defs
import Mathlib.Algebra.Order.Group.Basic
import Mathlib.Algebra.Order.Ring.Basic
import Mathlib.RingTheory.Localization.Basic
import Mathlib.SetTheory.Game.Birthday
import Mathlib.SetTheory.Surreal.Basic
#align_import set_theory.surreal.dyadic from "leanprover-community/mathlib"@"9... | Mathlib/SetTheory/Surreal/Dyadic.lean | 106 | 109 | theorem powHalf_le_one (n : ℕ) : powHalf n ≤ 1 := by |
induction' n with n hn
· exact le_rfl
· exact (powHalf_succ_le_powHalf n).trans hn
| 3 | 20.085537 | 1 | 0.714286 | 7 | 646 |
import Mathlib.Algebra.BigOperators.Group.Finset
import Mathlib.Data.Finset.NatAntidiagonal
import Mathlib.Data.Nat.GCD.Basic
import Mathlib.Init.Data.Nat.Lemmas
import Mathlib.Logic.Function.Iterate
import Mathlib.Tactic.Ring
import Mathlib.Tactic.Zify
#align_import data.nat.fib from "leanprover-community/mathlib"@"... | Mathlib/Data/Nat/Fib/Basic.lean | 135 | 143 | theorem le_fib_self {n : ℕ} (five_le_n : 5 ≤ n) : n ≤ fib n := by |
induction' five_le_n with n five_le_n IH
·-- 5 ≤ fib 5
rfl
· -- n + 1 ≤ fib (n + 1) for 5 ≤ n
rw [succ_le_iff]
calc
n ≤ fib n := IH
_ < fib (n + 1) := fib_lt_fib_succ (le_trans (by decide) five_le_n)
| 8 | 2,980.957987 | 2 | 1.181818 | 11 | 1,246 |
import Mathlib.Order.UpperLower.Basic
import Mathlib.Data.Finset.Preimage
#align_import combinatorics.young.young_diagram from "leanprover-community/mathlib"@"59694bd07f0a39c5beccba34bd9f413a160782bf"
open Function
@[ext]
structure YoungDiagram where
cells : Finset (ℕ × ℕ)
isLowerSet : IsLowerSet (cel... | Mathlib/Combinatorics/Young/YoungDiagram.lean | 231 | 233 | theorem transpose_eq_iff {μ ν : YoungDiagram} : μ.transpose = ν.transpose ↔ μ = ν := by |
rw [transpose_eq_iff_eq_transpose]
simp
| 2 | 7.389056 | 1 | 0.769231 | 13 | 683 |
import Mathlib.Analysis.Convex.Body
import Mathlib.Analysis.Convex.Measure
import Mathlib.MeasureTheory.Group.FundamentalDomain
#align_import measure_theory.group.geometry_of_numbers from "leanprover-community/mathlib"@"fd5edc43dc4f10b85abfe544b88f82cf13c5f844"
namespace MeasureTheory
open ENNReal FiniteDimensio... | Mathlib/MeasureTheory/Group/GeometryOfNumbers.lean | 92 | 142 | theorem exists_ne_zero_mem_lattice_of_measure_mul_two_pow_le_measure [NormedAddCommGroup E]
[NormedSpace ℝ E] [BorelSpace E] [FiniteDimensional ℝ E] [Nontrivial E] [IsAddHaarMeasure μ]
{L : AddSubgroup E} [Countable L] [DiscreteTopology L] (fund : IsAddFundamentalDomain L F μ)
(h_symm : ∀ x ∈ s, -x ∈ s) (h_... |
have h_mes : μ s ≠ 0 := by
intro hμ
suffices μ F = 0 from fund.measure_ne_zero (NeZero.ne μ) this
rw [hμ, le_zero_iff, mul_eq_zero] at h
exact h.resolve_right <| pow_ne_zero _ two_ne_zero
have h_nemp : s.Nonempty := nonempty_of_measure_ne_zero h_mes
let u : ℕ → ℝ≥0 := (exists_seq_strictAnti_tends... | 45 | 34,934,271,057,485,095,000 | 2 | 2 | 3 | 2,272 |
import Mathlib.Topology.Algebra.UniformConvergence
#align_import topology.algebra.module.strong_topology from "leanprover-community/mathlib"@"8905e5ed90859939681a725b00f6063e65096d95"
open scoped Topology UniformConvergence
section General
variable {𝕜₁ 𝕜₂ : Type*} [NormedField 𝕜₁] [NormedField 𝕜₂] (σ : 𝕜... | Mathlib/Topology/Algebra/Module/StrongTopology.lean | 96 | 101 | theorem topologicalSpace_eq [UniformSpace F] [UniformAddGroup F] (𝔖 : Set (Set E)) :
instTopologicalSpace σ F 𝔖 = TopologicalSpace.induced DFunLike.coe
(UniformOnFun.topologicalSpace E F 𝔖) := by |
rw [instTopologicalSpace]
congr
exact UniformAddGroup.toUniformSpace_eq
| 3 | 20.085537 | 1 | 1 | 3 | 861 |
import Mathlib.Data.List.OfFn
import Mathlib.Data.List.Range
#align_import data.list.fin_range from "leanprover-community/mathlib"@"9003f28797c0664a49e4179487267c494477d853"
universe u
open List
| Mathlib/Data/List/FinRange.lean | 79 | 82 | theorem Equiv.Perm.map_finRange_perm {n : ℕ} (σ : Equiv.Perm (Fin n)) :
map σ (finRange n) ~ finRange n := by |
rw [perm_ext_iff_of_nodup ((nodup_finRange n).map σ.injective) <| nodup_finRange n]
simpa [mem_map, mem_finRange, true_and_iff, iff_true_iff] using σ.surjective
| 2 | 7.389056 | 1 | 1.125 | 8 | 1,204 |
import Mathlib.CategoryTheory.Types
import Mathlib.CategoryTheory.Functor.EpiMono
import Mathlib.CategoryTheory.Limits.Constructions.EpiMono
#align_import category_theory.concrete_category.basic from "leanprover-community/mathlib"@"311ef8c4b4ae2804ea76b8a611bc5ea1d9c16872"
universe w w' v v' v'' u u' u''
namespa... | Mathlib/CategoryTheory/ConcreteCategory/Basic.lean | 106 | 110 | theorem ConcreteCategory.hom_ext {X Y : C} (f g : X ⟶ Y) (w : ∀ x : X, f x = g x) : f = g := by |
apply (forget C).map_injective
dsimp [forget]
funext x
exact w x
| 4 | 54.59815 | 2 | 2 | 1 | 2,104 |
import Mathlib.Probability.Kernel.MeasurableIntegral
#align_import probability.kernel.composition from "leanprover-community/mathlib"@"3b92d54a05ee592aa2c6181a4e76b1bb7cc45d0b"
open MeasureTheory
open scoped ENNReal
namespace ProbabilityTheory
namespace kernel
variable {α β ι : Type*} {mα : MeasurableSpace α}... | Mathlib/Probability/Kernel/Composition.lean | 93 | 96 | theorem compProdFun_empty (κ : kernel α β) (η : kernel (α × β) γ) (a : α) :
compProdFun κ η a ∅ = 0 := by |
simp only [compProdFun, Set.mem_empty_iff_false, Set.setOf_false, measure_empty,
MeasureTheory.lintegral_const, zero_mul]
| 2 | 7.389056 | 1 | 1.166667 | 6 | 1,242 |
import Mathlib.RingTheory.DedekindDomain.Ideal
import Mathlib.RingTheory.IsAdjoinRoot
#align_import number_theory.kummer_dedekind from "leanprover-community/mathlib"@"65a1391a0106c9204fe45bc73a039f056558cb83"
variable (R : Type*) {S : Type*} [CommRing R] [CommRing S] [Algebra R S]
open Ideal Polynomial DoubleQuo... | Mathlib/NumberTheory/KummerDedekind.lean | 119 | 148 | theorem prod_mem_ideal_map_of_mem_conductor {p : R} {z : S}
(hp : p ∈ Ideal.comap (algebraMap R S) (conductor R x)) (hz' : z ∈ I.map (algebraMap R S)) :
algebraMap R S p * z ∈ algebraMap R<x> S '' ↑(I.map (algebraMap R R<x>)) := by |
rw [Ideal.map, Ideal.span, Finsupp.mem_span_image_iff_total] at hz'
obtain ⟨l, H, H'⟩ := hz'
rw [Finsupp.total_apply] at H'
rw [← H', mul_comm, Finsupp.sum_mul]
have lem : ∀ {a : R}, a ∈ I → l a • algebraMap R S a * algebraMap R S p ∈
algebraMap R<x> S '' I.map (algebraMap R R<x>) := by
intro a ha
... | 27 | 532,048,240,601.79865 | 2 | 1.333333 | 3 | 1,421 |
import Batteries.Tactic.SeqFocus
import Batteries.Data.List.Lemmas
import Batteries.Data.List.Init.Attach
namespace Std.Range
def numElems (r : Range) : Nat :=
if r.step = 0 then
-- This is a very weird choice, but it is chosen to coincide with the `forIn` impl
if r.stop ≤ r.start then 0 else r.stop
els... | .lake/packages/batteries/Batteries/Data/Range/Lemmas.lean | 94 | 107 | theorem forIn_eq_forIn_range' [Monad m] (r : Std.Range)
(init : β) (f : Nat → β → m (ForInStep β)) :
forIn r init f = forIn (List.range' r.start r.numElems r.step) init f := by |
refine Eq.trans ?_ <| (forIn'_eq_forIn_range' r init (fun x _ => f x)).trans ?_
· simp [forIn, forIn', Range.forIn, Range.forIn']
suffices ∀ fuel i hl b, forIn'.loop r.start r.stop r.step (fun x _ => f x) fuel i hl b =
forIn.loop f fuel i r.stop r.step b from (this _ ..).symm
intro fuel; induction ... | 11 | 59,874.141715 | 2 | 1.5 | 4 | 1,541 |
import Mathlib.MeasureTheory.Integral.Lebesgue
#align_import measure_theory.measure.giry_monad from "leanprover-community/mathlib"@"56f4cd1ef396e9fd389b5d8371ee9ad91d163625"
noncomputable section
open scoped Classical
open ENNReal
open scoped Classical
open Set Filter
variable {α β : Type*}
namespace MeasureT... | Mathlib/MeasureTheory/Measure/GiryMonad.lean | 118 | 120 | theorem join_zero : (0 : Measure (Measure α)).join = 0 := by |
ext1 s hs
simp only [hs, join_apply, lintegral_zero_measure, coe_zero, Pi.zero_apply]
| 2 | 7.389056 | 1 | 1.4 | 5 | 1,497 |
import Mathlib.Data.Set.Subsingleton
import Mathlib.Order.WithBot
#align_import data.set.image from "leanprover-community/mathlib"@"001ffdc42920050657fd45bd2b8bfbec8eaaeb29"
universe u v
open Function Set
namespace Set
variable {α β γ : Type*} {ι ι' : Sort*}
section Preimage
variable {f : α → β} {g : β → γ... | Mathlib/Data/Set/Image.lean | 157 | 159 | theorem preimage_iterate_eq {f : α → α} {n : ℕ} : Set.preimage f^[n] = (Set.preimage f)^[n] := by |
induction' n with n ih; · simp
rw [iterate_succ, iterate_succ', preimage_comp_eq, ih]
| 2 | 7.389056 | 1 | 0.666667 | 15 | 590 |
import Mathlib.Algebra.Group.Subgroup.Basic
import Mathlib.Algebra.Order.Archimedean
import Mathlib.Data.Set.Lattice
#align_import group_theory.archimedean from "leanprover-community/mathlib"@"f93c11933efbc3c2f0299e47b8ff83e9b539cbf6"
open Set
variable {G : Type*} [LinearOrderedAddCommGroup G] [Archimedean G]
th... | Mathlib/GroupTheory/Archimedean.lean | 91 | 95 | theorem AddSubgroup.cyclic_of_isolated_zero {H : AddSubgroup G} {a : G} (h₀ : 0 < a)
(hd : Disjoint (H : Set G) (Ioo 0 a)) : ∃ b, H = closure {b} := by |
rcases eq_or_ne H ⊥ with rfl | hbot
· exact ⟨0, closure_singleton_zero.symm⟩
· exact (exists_isLeast_pos hbot h₀ hd).imp fun _ => cyclic_of_min
| 3 | 20.085537 | 1 | 1.666667 | 3 | 1,776 |
import Mathlib.NumberTheory.LegendreSymbol.QuadraticChar.Basic
#align_import number_theory.legendre_symbol.basic from "leanprover-community/mathlib"@"5b2fe80501ff327b9109fb09b7cc8c325cd0d7d9"
open Nat
section Euler
namespace ZMod
variable (p : ℕ) [Fact p.Prime]
theorem euler_criterion_units (x : (ZMod p)ˣ) :... | Mathlib/NumberTheory/LegendreSymbol/Basic.lean | 61 | 70 | theorem euler_criterion {a : ZMod p} (ha : a ≠ 0) : IsSquare (a : ZMod p) ↔ a ^ (p / 2) = 1 := by |
apply (iff_congr _ (by simp [Units.ext_iff])).mp (euler_criterion_units p (Units.mk0 a ha))
simp only [Units.ext_iff, sq, Units.val_mk0, Units.val_mul]
constructor
· rintro ⟨y, hy⟩; exact ⟨y, hy.symm⟩
· rintro ⟨y, rfl⟩
have hy : y ≠ 0 := by
rintro rfl
simp [zero_pow, mul_zero, ne_eq, not_true... | 9 | 8,103.083928 | 2 | 1 | 11 | 839 |
import Mathlib.RingTheory.WittVector.Frobenius
import Mathlib.RingTheory.WittVector.Verschiebung
import Mathlib.RingTheory.WittVector.MulP
#align_import ring_theory.witt_vector.identities from "leanprover-community/mathlib"@"0798037604b2d91748f9b43925fb7570a5f3256c"
namespace WittVector
variable {p : ℕ} {R : Typ... | Mathlib/RingTheory/WittVector/Identities.lean | 42 | 47 | theorem frobenius_verschiebung (x : 𝕎 R) : frobenius (verschiebung x) = x * p := by |
have : IsPoly p fun {R} [CommRing R] x ↦ frobenius (verschiebung x) :=
IsPoly.comp (hg := frobenius_isPoly p) (hf := verschiebung_isPoly)
have : IsPoly p fun {R} [CommRing R] x ↦ x * p := mulN_isPoly p p
ghost_calc x
ghost_simp [mul_comm]
| 5 | 148.413159 | 2 | 1 | 13 | 1,103 |
import Mathlib.Analysis.SpecialFunctions.Gaussian.GaussianIntegral
import Mathlib.Analysis.Complex.CauchyIntegral
import Mathlib.MeasureTheory.Integral.Pi
import Mathlib.Analysis.Fourier.FourierTransform
open Real Set MeasureTheory Filter Asymptotics intervalIntegral
open scoped Real Topology FourierTransform Re... | Mathlib/Analysis/SpecialFunctions/Gaussian/FourierTransform.lean | 51 | 55 | theorem norm_cexp_neg_mul_sq_add_mul_I (b : ℂ) (c T : ℝ) :
‖cexp (-b * (T + c * I) ^ 2)‖ = exp (-(b.re * T ^ 2 - 2 * b.im * c * T - b.re * c ^ 2)) := by |
rw [Complex.norm_eq_abs, Complex.abs_exp, neg_mul, neg_re, ← re_add_im b]
simp only [sq, re_add_im, mul_re, mul_im, add_re, add_im, ofReal_re, ofReal_im, I_re, I_im]
ring_nf
| 3 | 20.085537 | 1 | 1.8 | 5 | 1,904 |
import Mathlib.Analysis.SpecialFunctions.Pow.NNReal
#align_import analysis.special_functions.pow.asymptotics from "leanprover-community/mathlib"@"0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8"
set_option linter.uppercaseLean3 false
noncomputable section
open scoped Classical
open Real Topology NNReal ENNReal Filter C... | Mathlib/Analysis/SpecialFunctions/Pow/Asymptotics.lean | 126 | 128 | theorem tendsto_rpow_neg_div : Tendsto (fun x => x ^ (-(1 : ℝ) / x)) atTop (𝓝 1) := by |
convert tendsto_rpow_div_mul_add (-(1 : ℝ)) _ (0 : ℝ) zero_ne_one
ring
| 2 | 7.389056 | 1 | 1.5 | 10 | 1,605 |
import Mathlib.Algebra.Group.Equiv.Basic
import Mathlib.Algebra.Group.Aut
import Mathlib.Data.ZMod.Defs
import Mathlib.Tactic.Ring
#align_import algebra.quandle from "leanprover-community/mathlib"@"28aa996fc6fb4317f0083c4e6daf79878d81be33"
open MulOpposite
universe u v
class Shelf (α : Type u) where
act : ... | Mathlib/Algebra/Quandle.lean | 293 | 297 | theorem self_act_invAct_eq {x y : R} : (x ◃ x) ◃⁻¹ y = x ◃⁻¹ y := by |
rw [← left_cancel (x ◃ x)]
rw [right_inv]
rw [self_act_act_eq]
rw [right_inv]
| 4 | 54.59815 | 2 | 1.285714 | 7 | 1,357 |
import Mathlib.Geometry.Manifold.ContMDiff.Basic
open Set ChartedSpace SmoothManifoldWithCorners
open scoped Manifold
variable {𝕜 : Type*} [NontriviallyNormedField 𝕜]
-- declare a smooth manifold `M` over the pair `(E, H)`.
{E : Type*}
[NormedAddCommGroup E] [NormedSpace 𝕜 E] {H : Type*} [TopologicalSpace... | Mathlib/Geometry/Manifold/ContMDiff/Atlas.lean | 105 | 110 | theorem contMDiffOn_extend_symm (he : e ∈ maximalAtlas I M) :
ContMDiffOn 𝓘(𝕜, E) I n (e.extend I).symm (I '' e.target) := by |
refine (contMDiffOn_symm_of_mem_maximalAtlas he).comp
(contMDiffOn_model_symm.mono <| image_subset_range _ _) ?_
simp_rw [image_subset_iff, PartialEquiv.restr_coe_symm, I.toPartialEquiv_coe_symm,
preimage_preimage, I.left_inv, preimage_id']; rfl
| 4 | 54.59815 | 2 | 1.75 | 4 | 1,863 |
import Mathlib.LinearAlgebra.QuadraticForm.IsometryEquiv
#align_import linear_algebra.quadratic_form.prod from "leanprover-community/mathlib"@"9b2755b951bc323c962bd072cd447b375cf58101"
universe u v w
variable {ι : Type*} {R : Type*} {M₁ M₂ N₁ N₂ : Type*} {Mᵢ Nᵢ : ι → Type*}
namespace QuadraticForm
section Pro... | Mathlib/LinearAlgebra/QuadraticForm/Prod.lean | 313 | 325 | theorem anisotropic_of_pi [Fintype ι] {R} [OrderedCommRing R] [∀ i, Module R (Mᵢ i)]
{Q : ∀ i, QuadraticForm R (Mᵢ i)} (h : (pi Q).Anisotropic) : ∀ i, (Q i).Anisotropic := by |
simp_rw [Anisotropic, pi_apply, Function.funext_iff, Pi.zero_apply] at h
intro i x hx
classical
have := h (Pi.single i x) ?_ i
· rw [Pi.single_eq_same] at this
exact this
apply Finset.sum_eq_zero
intro j _
by_cases hji : j = i
· subst hji; rw [Pi.single_eq_same, hx]
· rw [Pi.single_eq_of_ne hji... | 11 | 59,874.141715 | 2 | 1.833333 | 6 | 1,914 |
import Mathlib.SetTheory.Ordinal.Arithmetic
import Mathlib.SetTheory.Ordinal.Exponential
#align_import set_theory.ordinal.cantor_normal_form from "leanprover-community/mathlib"@"991ff3b5269848f6dd942ae8e9dd3c946035dc8b"
noncomputable section
universe u
open List
namespace Ordinal
@[elab_as_elim]
noncomputabl... | Mathlib/SetTheory/Ordinal/CantorNormalForm.lean | 150 | 158 | theorem CNF_snd_lt {b o : Ordinal.{u}} (hb : 1 < b) {x : Ordinal × Ordinal} :
x ∈ CNF b o → x.2 < b := by |
refine CNFRec b ?_ (fun o ho IH ↦ ?_) o
· simp only [CNF_zero, not_mem_nil, IsEmpty.forall_iff]
· rw [CNF_ne_zero ho]
intro h
cases' (mem_cons.mp h) with h h
· rw [h]; simpa only using div_opow_log_lt o hb
· exact IH h
| 7 | 1,096.633158 | 2 | 0.888889 | 9 | 775 |
import Mathlib.Data.Rat.Cast.Defs
import Mathlib.Algebra.Field.Basic
#align_import data.rat.cast from "leanprover-community/mathlib"@"acebd8d49928f6ed8920e502a6c90674e75bd441"
namespace Rat
variable {α : Type*} [DivisionRing α]
-- Porting note: rewrote proof
@[simp]
theorem cast_inv_nat (n : ℕ) : ((n⁻¹ : ℚ) : α... | Mathlib/Data/Rat/Cast/Lemmas.lean | 37 | 40 | theorem cast_inv_int (n : ℤ) : ((n⁻¹ : ℚ) : α) = (n : α)⁻¹ := by |
cases' n with n n
· simp [ofInt_eq_cast, cast_inv_nat]
· simp only [ofInt_eq_cast, Int.cast_negSucc, ← Nat.cast_succ, cast_neg, inv_neg, cast_inv_nat]
| 3 | 20.085537 | 1 | 1.333333 | 6 | 1,436 |
import Mathlib.Data.Finsupp.Multiset
import Mathlib.Data.Nat.GCD.BigOperators
import Mathlib.Data.Nat.PrimeFin
import Mathlib.NumberTheory.Padics.PadicVal
import Mathlib.Order.Interval.Finset.Nat
#align_import data.nat.factorization.basic from "leanprover-community/mathlib"@"f694c7dead66f5d4c80f446c796a5aad14707f0e"
... | Mathlib/Data/Nat/Factorization/Basic.lean | 99 | 102 | theorem factorization_prod_pow_eq_self {n : ℕ} (hn : n ≠ 0) : n.factorization.prod (· ^ ·) = n := by |
rw [factorization_eq_factors_multiset n]
simp only [← prod_toMultiset, factorization, Multiset.prod_coe, Multiset.toFinsupp_toMultiset]
exact prod_factors hn
| 3 | 20.085537 | 1 | 0.4 | 10 | 388 |
import Mathlib.Analysis.SpecificLimits.Basic
import Mathlib.Data.Rat.Denumerable
import Mathlib.Data.Set.Pointwise.Interval
import Mathlib.SetTheory.Cardinal.Continuum
#align_import data.real.cardinality from "leanprover-community/mathlib"@"7e7aaccf9b0182576cabdde36cf1b5ad3585b70d"
open Nat Set
open Cardinal
no... | Mathlib/Data/Real/Cardinality.lean | 105 | 110 | theorem cantorFunction_le (h1 : 0 ≤ c) (h2 : c < 1) (h3 : ∀ n, f n → g n) :
cantorFunction c f ≤ cantorFunction c g := by |
apply tsum_le_tsum _ (summable_cantor_function f h1 h2) (summable_cantor_function g h1 h2)
intro n; cases h : f n
· simp [h, cantorFunctionAux_nonneg h1]
replace h3 : g n = true := h3 n h; simp [h, h3]
| 4 | 54.59815 | 2 | 0.909091 | 11 | 786 |
import Mathlib.Order.Filter.Germ
import Mathlib.Topology.NhdsSet
import Mathlib.Topology.LocallyConstant.Basic
import Mathlib.Analysis.NormedSpace.Basic
variable {F G : Type*} [NormedAddCommGroup F] [NormedSpace ℝ F]
[NormedAddCommGroup G] [NormedSpace ℝ G]
open scoped Topology
open Filter Set
variable {X Y Z ... | Mathlib/Topology/Germ.lean | 112 | 115 | theorem forall_restrictGermPredicate_iff {P : ∀ x : X, Germ (𝓝 x) Y → Prop} :
(∀ x, RestrictGermPredicate P A x f) ↔ ∀ᶠ x in 𝓝ˢ A, P x f := by |
rw [eventually_nhdsSet_iff_forall]
rfl
| 2 | 7.389056 | 1 | 1.666667 | 3 | 1,810 |
import Mathlib.Topology.Semicontinuous
import Mathlib.MeasureTheory.Function.AEMeasurableSequence
import Mathlib.MeasureTheory.Order.Lattice
import Mathlib.Topology.Order.Lattice
import Mathlib.MeasureTheory.Constructions.BorelSpace.Basic
#align_import measure_theory.constructions.borel_space.basic from "leanprover-c... | Mathlib/MeasureTheory/Constructions/BorelSpace/Order.lean | 81 | 92 | theorem borel_eq_generateFrom_Iic :
borel α = MeasurableSpace.generateFrom (range Iic) := by |
rw [borel_eq_generateFrom_Ioi]
refine le_antisymm ?_ ?_
· refine MeasurableSpace.generateFrom_le fun t ht => ?_
obtain ⟨u, rfl⟩ := ht
rw [← compl_Iic]
exact (MeasurableSpace.measurableSet_generateFrom (mem_range.mpr ⟨u, rfl⟩)).compl
· refine MeasurableSpace.generateFrom_le fun t ht => ?_
obtain... | 10 | 22,026.465795 | 2 | 2 | 2 | 1,995 |
import Mathlib.Algebra.Order.Monoid.Unbundled.Basic
#align_import algebra.order.monoid.min_max from "leanprover-community/mathlib"@"de87d5053a9fe5cbde723172c0fb7e27e7436473"
open Function
variable {α β : Type*}
section CovariantClassMulLe
variable [LinearOrder α]
section Mul
variable [Mul α]
@[to_additive... | Mathlib/Algebra/Order/Monoid/Unbundled/MinMax.lean | 99 | 103 | theorem le_or_lt_of_mul_le_mul [CovariantClass α α (· * ·) (· ≤ ·)]
[CovariantClass α α (Function.swap (· * ·)) (· < ·)] {a₁ a₂ b₁ b₂ : α} :
a₁ * b₁ ≤ a₂ * b₂ → a₁ ≤ a₂ ∨ b₁ < b₂ := by |
contrapose!
exact fun h => mul_lt_mul_of_lt_of_le h.1 h.2
| 2 | 7.389056 | 1 | 1.2 | 5 | 1,252 |
import Mathlib.Tactic.Ring
import Mathlib.Data.PNat.Prime
#align_import data.pnat.xgcd from "leanprover-community/mathlib"@"6afc9b06856ad973f6a2619e3e8a0a8d537a58f2"
open Nat
namespace PNat
structure XgcdType where
wp : ℕ
x : ℕ
y : ℕ
zp : ℕ
ap : ℕ
bp : ℕ
deriving Inhabited
#alig... | Mathlib/Data/PNat/Xgcd.lean | 222 | 224 | theorem flip_isSpecial : (flip u).IsSpecial ↔ u.IsSpecial := by |
dsimp [IsSpecial, flip]
rw [mul_comm u.x, mul_comm u.zp, add_comm u.zp]
| 2 | 7.389056 | 1 | 1 | 4 | 924 |
import Mathlib.Analysis.Complex.AbsMax
import Mathlib.Analysis.Asymptotics.SuperpolynomialDecay
#align_import analysis.complex.phragmen_lindelof from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
open Set Function Filter Asymptotics Metric Complex Bornology
open scoped Topology Filter R... | Mathlib/Analysis/Complex/PhragmenLindelof.lean | 63 | 74 | theorem isBigO_sub_exp_exp {a : ℝ} {f g : ℂ → E} {l : Filter ℂ} {u : ℂ → ℝ}
(hBf : ∃ c < a, ∃ B, f =O[l] fun z => expR (B * expR (c * |u z|)))
(hBg : ∃ c < a, ∃ B, g =O[l] fun z => expR (B * expR (c * |u z|))) :
∃ c < a, ∃ B, (f - g) =O[l] fun z => expR (B * expR (c * |u z|)) := by |
have : ∀ {c₁ c₂ B₁ B₂}, c₁ ≤ c₂ → 0 ≤ B₂ → B₁ ≤ B₂ → ∀ z,
‖expR (B₁ * expR (c₁ * |u z|))‖ ≤ ‖expR (B₂ * expR (c₂ * |u z|))‖ := fun hc hB₀ hB z ↦ by
simp only [Real.norm_eq_abs, Real.abs_exp]; gcongr
rcases hBf with ⟨cf, hcf, Bf, hOf⟩; rcases hBg with ⟨cg, hcg, Bg, hOg⟩
refine ⟨max cf cg, max_lt hcf hcg... | 8 | 2,980.957987 | 2 | 2 | 3 | 2,267 |
import Mathlib.Dynamics.Ergodic.MeasurePreserving
import Mathlib.LinearAlgebra.Determinant
import Mathlib.LinearAlgebra.Matrix.Diagonal
import Mathlib.LinearAlgebra.Matrix.Transvection
import Mathlib.MeasureTheory.Group.LIntegral
import Mathlib.MeasureTheory.Integral.Marginal
import Mathlib.MeasureTheory.Measure.Stiel... | Mathlib/MeasureTheory/Measure/Lebesgue/Basic.lean | 624 | 653 | theorem ae_restrict_of_ae_restrict_inter_Ioo {μ : Measure ℝ} [NoAtoms μ] {s : Set ℝ} {p : ℝ → Prop}
(h : ∀ a b, a ∈ s → b ∈ s → a < b → ∀ᵐ x ∂μ.restrict (s ∩ Ioo a b), p x) :
∀ᵐ x ∂μ.restrict s, p x := by |
/- By second-countability, we cover `s` by countably many intervals `(a, b)` (except maybe for
two endpoints, which don't matter since `μ` does not have any atom). -/
let T : s × s → Set ℝ := fun p => Ioo p.1 p.2
let u := ⋃ i : ↥s × ↥s, T i
have hfinite : (s \ u).Finite := s.finite_diff_iUnion_Ioo'
obtai... | 27 | 532,048,240,601.79865 | 2 | 0.909091 | 22 | 790 |
import Mathlib.GroupTheory.Perm.Cycle.Basic
#align_import group_theory.perm.cycle.basic from "leanprover-community/mathlib"@"e8638a0fcaf73e4500469f368ef9494e495099b3"
open Equiv Function Finset
variable {ι α β : Type*}
namespace Equiv.Perm
section Generation
variable [Finite β]
open Subgroup
theorem closure... | Mathlib/GroupTheory/Perm/Closure.lean | 46 | 93 | theorem closure_cycle_adjacent_swap {σ : Perm α} (h1 : IsCycle σ) (h2 : σ.support = ⊤) (x : α) :
closure ({σ, swap x (σ x)} : Set (Perm α)) = ⊤ := by |
let H := closure ({σ, swap x (σ x)} : Set (Perm α))
have h3 : σ ∈ H := subset_closure (Set.mem_insert σ _)
have h4 : swap x (σ x) ∈ H := subset_closure (Set.mem_insert_of_mem _ (Set.mem_singleton _))
have step1 : ∀ n : ℕ, swap ((σ ^ n) x) ((σ ^ (n + 1) : Perm α) x) ∈ H := by
intro n
induction' n with n... | 46 | 94,961,194,206,024,480,000 | 2 | 2 | 4 | 2,314 |
import Mathlib.Analysis.SpecialFunctions.PolarCoord
import Mathlib.Analysis.SpecialFunctions.Gamma.Basic
open Real Set MeasureTheory MeasureTheory.Measure
section real
| Mathlib/MeasureTheory/Integral/Gamma.lean | 21 | 37 | theorem integral_rpow_mul_exp_neg_rpow {p q : ℝ} (hp : 0 < p) (hq : - 1 < q) :
∫ x in Ioi (0:ℝ), x ^ q * exp (- x ^ p) = (1 / p) * Gamma ((q + 1) / p) := by |
calc
_ = ∫ (x : ℝ) in Ioi 0, (1 / p * x ^ (1 / p - 1)) • ((x ^ (1 / p)) ^ q * exp (-x)) := by
rw [← integral_comp_rpow_Ioi _ (one_div_ne_zero (ne_of_gt hp)),
abs_eq_self.mpr (le_of_lt (one_div_pos.mpr hp))]
refine setIntegral_congr measurableSet_Ioi (fun _ hx => ?_)
rw [← rpow_mul (le_... | 15 | 3,269,017.372472 | 2 | 1.5 | 4 | 1,616 |
import Mathlib.Analysis.SpecificLimits.Basic
import Mathlib.Data.Setoid.Basic
import Mathlib.Dynamics.FixedPoints.Topology
import Mathlib.Topology.MetricSpace.Lipschitz
#align_import topology.metric_space.contracting from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
open scoped Classi... | Mathlib/Topology/MetricSpace/Contracting.lean | 84 | 87 | theorem eq_or_edist_eq_top_of_fixedPoints (hf : ContractingWith K f) {x y} (hx : IsFixedPt f x)
(hy : IsFixedPt f y) : x = y ∨ edist x y = ∞ := by |
refine or_iff_not_imp_right.2 fun h ↦ edist_le_zero.1 ?_
simpa only [hx.eq, edist_self, add_zero, ENNReal.zero_div] using hf.edist_le_of_fixedPoint h hy
| 2 | 7.389056 | 1 | 0.6 | 5 | 531 |
import Mathlib.Topology.MetricSpace.HausdorffDistance
#align_import topology.metric_space.hausdorff_distance from "leanprover-community/mathlib"@"bc91ed7093bf098d253401e69df601fc33dde156"
noncomputable section
open NNReal ENNReal Topology Set Filter Bornology
universe u v w
variable {ι : Sort*} {α : Type u} {β :... | Mathlib/Topology/MetricSpace/Thickening.lean | 271 | 275 | theorem closedBall_subset_cthickening_singleton {α : Type*} [PseudoMetricSpace α] (x : α) (δ : ℝ) :
closedBall x δ ⊆ cthickening δ ({x} : Set α) := by |
rcases lt_or_le δ 0 with (hδ | hδ)
· simp only [closedBall_eq_empty.mpr hδ, empty_subset]
· simp only [cthickening_singleton x hδ, Subset.rfl]
| 3 | 20.085537 | 1 | 0.777778 | 9 | 686 |
import Mathlib.Algebra.Order.Ring.Nat
import Mathlib.Algebra.Order.Monoid.WithTop
#align_import data.nat.with_bot from "leanprover-community/mathlib"@"966e0cf0685c9cedf8a3283ac69eef4d5f2eaca2"
namespace Nat
namespace WithBot
instance : WellFoundedRelation (WithBot ℕ) where
rel := (· < ·)
wf := IsWellFounde... | Mathlib/Data/Nat/WithBot.lean | 35 | 40 | theorem add_eq_one_iff {n m : WithBot ℕ} : n + m = 1 ↔ n = 0 ∧ m = 1 ∨ n = 1 ∧ m = 0 := by |
rcases n, m with ⟨_ | _, _ | _⟩
repeat refine ⟨fun h => Option.noConfusion h, fun h => ?_⟩;
aesop (simp_config := { decide := true })
repeat erw [WithBot.coe_eq_coe]
exact Nat.add_eq_one_iff
| 5 | 148.413159 | 2 | 1.857143 | 7 | 1,928 |
import Mathlib.LinearAlgebra.Projectivization.Basic
#align_import linear_algebra.projective_space.subspace from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
variable (K V : Type*) [Field K] [AddCommGroup V] [Module K V]
namespace Projectivization
open scoped LinearAlgebra.Projectivi... | Mathlib/LinearAlgebra/Projectivization/Subspace.lean | 155 | 158 | theorem span_univ : span (Set.univ : Set (ℙ K V)) = ⊤ := by |
rw [eq_top_iff, SetLike.le_def]
intro x _hx
exact subset_span _ (Set.mem_univ x)
| 3 | 20.085537 | 1 | 1 | 1 | 934 |
import Mathlib.Order.Interval.Finset.Nat
import Mathlib.Data.PNat.Defs
#align_import data.pnat.interval from "leanprover-community/mathlib"@"1d29de43a5ba4662dd33b5cfeecfc2a27a5a8a29"
open Finset Function PNat
namespace PNat
variable (a b : ℕ+)
instance instLocallyFiniteOrder : LocallyFiniteOrder ℕ+ := Subtype.... | Mathlib/Data/PNat/Interval.lean | 94 | 99 | theorem card_Ioo : (Ioo a b).card = b - a - 1 := by |
rw [← Nat.card_Ioo]
-- Porting note: I had to change this to `erw` *and* provide the proof, yuck.
-- https://github.com/leanprover-community/mathlib4/issues/5164
erw [← Finset.map_subtype_embedding_Ioo _ a b (fun c x _ hx _ hc _ => hc.trans_le hx)]
rw [card_map]
| 5 | 148.413159 | 2 | 1 | 8 | 948 |
import Mathlib.Analysis.Convex.Between
import Mathlib.Analysis.Convex.Jensen
import Mathlib.Analysis.Convex.Topology
import Mathlib.Analysis.Normed.Group.Pointwise
import Mathlib.Analysis.NormedSpace.AddTorsor
#align_import analysis.convex.normed from "leanprover-community/mathlib"@"a63928c34ec358b5edcda2bf7513c50052... | Mathlib/Analysis/Convex/Normed.lean | 75 | 80 | theorem Convex.cthickening (hs : Convex ℝ s) (δ : ℝ) : Convex ℝ (cthickening δ s) := by |
obtain hδ | hδ := le_total 0 δ
· rw [cthickening_eq_iInter_thickening hδ]
exact convex_iInter₂ fun _ _ => hs.thickening _
· rw [cthickening_of_nonpos hδ]
exact hs.closure
| 5 | 148.413159 | 2 | 0.818182 | 11 | 721 |
import Mathlib.Algebra.Polynomial.Degree.Definitions
import Mathlib.Data.ENat.Basic
#align_import data.polynomial.degree.trailing_degree from "leanprover-community/mathlib"@"302eab4f46abb63de520828de78c04cb0f9b5836"
noncomputable section
open Function Polynomial Finsupp Finset
open scoped Polynomial
namespace ... | Mathlib/Algebra/Polynomial/Degree/TrailingDegree.lean | 148 | 151 | theorem natTrailingDegree_eq_of_trailingDegree_eq [Semiring S] {q : S[X]}
(h : trailingDegree p = trailingDegree q) : natTrailingDegree p = natTrailingDegree q := by |
unfold natTrailingDegree
rw [h]
| 2 | 7.389056 | 1 | 1.666667 | 6 | 1,754 |
import Batteries.Data.Array.Lemmas
namespace ByteArray
@[ext] theorem ext : {a b : ByteArray} → a.data = b.data → a = b
| ⟨_⟩, ⟨_⟩, rfl => rfl
theorem getElem_eq_data_getElem (a : ByteArray) (h : i < a.size) : a[i] = a.data[i] := rfl
@[simp] theorem uset_eq_set (a : ByteArray) {i : USize} (h : i.toNat < a.size... | .lake/packages/batteries/Batteries/Data/ByteArray.lean | 102 | 105 | theorem get_extract_aux {a : ByteArray} {start stop} (h : i < (a.extract start stop).size) :
start + i < a.size := by |
apply Nat.add_lt_of_lt_sub'; apply Nat.lt_of_lt_of_le h
rw [size_extract, ← Nat.sub_min_sub_right]; exact Nat.min_le_right ..
| 2 | 7.389056 | 1 | 0.25 | 4 | 286 |
import Mathlib.CategoryTheory.Subobject.Lattice
#align_import category_theory.subobject.limits from "leanprover-community/mathlib"@"956af7c76589f444f2e1313911bad16366ea476d"
universe v u
noncomputable section
open CategoryTheory CategoryTheory.Category CategoryTheory.Limits CategoryTheory.Subobject Opposite
var... | Mathlib/CategoryTheory/Subobject/Limits.lean | 134 | 137 | theorem factorThruKernelSubobject_comp_arrow {W : C} (h : W ⟶ X) (w : h ≫ f = 0) :
factorThruKernelSubobject f h w ≫ (kernelSubobject f).arrow = h := by |
dsimp [factorThruKernelSubobject]
simp
| 2 | 7.389056 | 1 | 0.263158 | 19 | 308 |
import Mathlib.Algebra.Order.Hom.Ring
import Mathlib.Algebra.Order.Pointwise
import Mathlib.Analysis.SpecialFunctions.Pow.Real
#align_import algebra.order.complete_field from "leanprover-community/mathlib"@"0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8"
variable {F α β γ : Type*}
noncomputable section
open Function ... | Mathlib/Algebra/Order/CompleteField.lean | 121 | 127 | theorem cutMap_self (a : α) : cutMap α a = Iio a ∩ range (Rat.cast : ℚ → α) := by |
ext
constructor
· rintro ⟨q, h, rfl⟩
exact ⟨h, q, rfl⟩
· rintro ⟨h, q, rfl⟩
exact ⟨q, h, rfl⟩
| 6 | 403.428793 | 2 | 2 | 1 | 2,204 |
import Mathlib.Analysis.Complex.CauchyIntegral
import Mathlib.Analysis.Calculus.FDeriv.Analytic
import Mathlib.Analysis.NormedSpace.Completion
#align_import analysis.complex.liouville from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
open TopologicalSpace Metric Set Filter Asymptotics ... | Mathlib/Analysis/Complex/Liouville.lean | 45 | 50 | theorem deriv_eq_smul_circleIntegral [CompleteSpace F] {R : ℝ} {c : ℂ} {f : ℂ → F} (hR : 0 < R)
(hf : DiffContOnCl ℂ f (ball c R)) :
deriv f c = (2 * π * I : ℂ)⁻¹ • ∮ z in C(c, R), (z - c) ^ (-2 : ℤ) • f z := by |
lift R to ℝ≥0 using hR.le
refine (hf.hasFPowerSeriesOnBall hR).hasFPowerSeriesAt.deriv.trans ?_
simp only [cauchyPowerSeries_apply, one_div, zpow_neg, pow_one, smul_smul, zpow_two, mul_inv]
| 3 | 20.085537 | 1 | 1.75 | 4 | 1,851 |
import Mathlib.Data.Nat.Defs
import Mathlib.Tactic.GCongr.Core
import Mathlib.Tactic.Common
import Mathlib.Tactic.Monotonicity.Attr
#align_import data.nat.factorial.basic from "leanprover-community/mathlib"@"d012cd09a9b256d870751284dd6a29882b0be105"
namespace Nat
def factorial : ℕ → ℕ
| 0 => 1
| succ n => s... | Mathlib/Data/Nat/Factorial/Basic.lean | 95 | 103 | theorem factorial_lt (hn : 0 < n) : n ! < m ! ↔ n < m := by |
refine ⟨fun h => not_le.mp fun hmn => Nat.not_le_of_lt h (factorial_le hmn), fun h => ?_⟩
have : ∀ {n}, 0 < n → n ! < (n + 1)! := by
intro k hk
rw [factorial_succ, succ_mul, Nat.lt_add_left_iff_pos]
exact Nat.mul_pos hk k.factorial_pos
induction' h with k hnk ih generalizing hn
· exact this hn
· ... | 8 | 2,980.957987 | 2 | 1.333333 | 9 | 1,434 |
import Mathlib.LinearAlgebra.QuadraticForm.IsometryEquiv
#align_import linear_algebra.quadratic_form.prod from "leanprover-community/mathlib"@"9b2755b951bc323c962bd072cd447b375cf58101"
universe u v w
variable {ι : Type*} {R : Type*} {M₁ M₂ N₁ N₂ : Type*} {Mᵢ Nᵢ : ι → Type*}
namespace QuadraticForm
section Pro... | Mathlib/LinearAlgebra/QuadraticForm/Prod.lean | 137 | 147 | theorem anisotropic_of_prod {R} [OrderedCommRing R] [Module R M₁] [Module R M₂]
{Q₁ : QuadraticForm R M₁} {Q₂ : QuadraticForm R M₂} (h : (Q₁.prod Q₂).Anisotropic) :
Q₁.Anisotropic ∧ Q₂.Anisotropic := by |
simp_rw [Anisotropic, prod_apply, Prod.forall, Prod.mk_eq_zero] at h
constructor
· intro x hx
refine (h x 0 ?_).1
rw [hx, zero_add, map_zero]
· intro x hx
refine (h 0 x ?_).2
rw [hx, add_zero, map_zero]
| 8 | 2,980.957987 | 2 | 1.833333 | 6 | 1,914 |
import Mathlib.Analysis.SpecificLimits.Basic
import Mathlib.Analysis.SpecialFunctions.Pow.Real
#align_import analysis.specific_limits.floor_pow from "leanprover-community/mathlib"@"0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8"
open Filter Finset
open Topology
| Mathlib/Analysis/SpecificLimits/FloorPow.lean | 28 | 182 | theorem tendsto_div_of_monotone_of_exists_subseq_tendsto_div (u : ℕ → ℝ) (l : ℝ)
(hmono : Monotone u)
(hlim : ∀ a : ℝ, 1 < a → ∃ c : ℕ → ℕ, (∀ᶠ n in atTop, (c (n + 1) : ℝ) ≤ a * c n) ∧
Tendsto c atTop atTop ∧ Tendsto (fun n => u (c n) / c n) atTop (𝓝 l)) :
Tendsto (fun n => u n / n) atTop (𝓝 l) := b... |
/- To check the result up to some `ε > 0`, we use a sequence `c` for which the ratio
`c (N+1) / c N` is bounded by `1 + ε`. Sandwiching a given `n` between two consecutive values of
`c`, say `c N` and `c (N+1)`, one can then bound `u n / n` from above by `u (c N) / c (N - 1)`
and from below by `u (c (N -... | 150 | 139,370,958,066,637,970,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 | 2 | 2 | 1 | 2,418 |
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