mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Algebra.Homology.HomologySequenceLemmas

Goal state before:
pp: case neg
C : Type u_1
ι : Type u_2
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
c : ComplexShape ι
S : ShortComplex (HomologicalComplex C c)
hS : S.ShortExact
j : ι
h₁ : Mono (HomologicalComplex.homologyMap S.g j)
h₂ : ∀ (i : ι), c.Rel i j → Epi (HomologicalComplex.homologyMap S.g i)
hj : ∀ (i : ι), ¬c.Rel i j
this✝ : Mono S.f
this : Mono (HomologicalComplex.homologyMap S.f j)
⊢ 𝟙 (S.X₁.homology j) = 0

Tactic:
← cancel_mono (HomologicalComplex.homologyMap S.f j),

Goal state after:
case neg
C : Type u_1
ι : Type u_2
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
c : ComplexShape ι
S : ShortComplex (HomologicalComplex C c)
hS : S.ShortExact
j : ι
h₁ : Mono (HomologicalComplex.homologyMap S.g j)
h₂ : ∀ (i : ι), c.Rel i j → Epi (HomologicalComplex.homologyMap S.g i)
hj : ∀ (i : ι), ¬c.Rel i j
this✝ : Mono S.f
this : Mono (HomologicalComplex.homologyMap S.f j)
⊢ 𝟙 (S.X₁.homology j) ≫ HomologicalComplex.homologyMap S.f j = 0 ≫ HomologicalComplex.homologyMap S.f j
Module: Mathlib.Algebra.Homology.DerivedCategory.Ext.Basic

Goal state before:
pp: C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasExt C
Y : C
n : ℕ
X₁ X₂ : C
α β : Ext (X₁ ⊞ X₂) Y n
h₁ : (mk₀ biprod.inl).comp α ⋯ = (mk₀ biprod.inl).comp β ⋯
h₂ : (mk₀ biprod.inr).comp α ⋯ = (mk₀ biprod.inr).comp β ⋯
⊢ α = β

Tactic:
by
  let := HasDerivedCategory.standard C
  rw [Ext.ext_iff] at h₁ h₂ ⊢
  simp only [comp_hom, mk₀_hom, ShiftedHom.mk₀_comp] at h₁ h₂
  apply BinaryCofan.IsColimit.hom_ext
    (isBinaryBilimitOfPreserves (singleFunctor C 0)
      (BinaryBiproduct.isBilimit X₁ X₂)).isColimit
  all_goals assumption

Goal state after:
Module: Mathlib.Algebra.Homology.DerivedCategory.ShortExact

Goal state before:
pp: C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
S₁ S₂ : ShortComplex (CochainComplex C ℤ)
hS₁ : S₁.ShortExact
hS₂ : S₂.ShortExact
f : S₁ ⟶ S₂
⊢ Q.map ((CochainComplex.mappingCone.triangle S₁.f).mor₃ ≫ (shiftFunctor (CochainComplex C ℤ) 1).map f.τ₁) =
    Q.map (CochainComplex.mappingCone.map S₁.f S₂.f f.τ₁ f.τ₂ ⋯ ≫ (CochainComplex.mappingCone.triangle S₂.f).mor₃)

Tactic:
congr 1

Goal state after:
C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
S₁ S₂ : ShortComplex (CochainComplex C ℤ)
hS₁ : S₁.ShortExact
hS₂ : S₂.ShortExact
f : S₁ ⟶ S₂
⊢ (CochainComplex.mappingCone.triangle S₁.f).mor₃ ≫ (shiftFunctor (CochainComplex C ℤ) 1).map f.τ₁ =
    CochainComplex.mappingCone.map S₁.f S₂.f f.τ₁ f.τ₂ ⋯ ≫ (CochainComplex.mappingCone.triangle S₂.f).mor₃
Module: Mathlib.CategoryTheory.Abelian.DiagramLemmas.Four

Goal state before:
pp: C : Type u_1
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
R₁ R₂ : ComposableArrows C 3
φ : R₁ ⟶ R₂
hR₁ :
  (mk₂ (R₁.map' 1 2 mono_of_epi_of_mono_of_mono'._proof_6 mono_of_epi_of_mono_of_mono'._proof_4)
      (R₁.map' 2 3 mono_of_epi_of_mono_of_mono'._proof_4 mono_of_epi_of_mono_of_mono'._proof_7)).Exact
hR₂ :
  (mk₂ (R₂.map' 0 1 mono_of_epi_of_mono_of_mono'._proof_9 mono_of_epi_of_mono_of_mono'._proof_11)
      (R₂.map' 1 2 mono_of_epi_of_mono_of_mono'._proof_6 mono_of_epi_of_mono_of_mono'._proof_4)).Exact
hR₂' : R₂.map' 1 3 mono_of_epi_of_mono_of_mono'._proof_11 mono_of_epi_of_mono_of_mono'._proof_7 = 0
h₀ : Epi (app' φ 0 mono_of_epi_of_mono_of_mono'._proof_13)
h₂ : Epi (app' φ 2 mono_of_epi_of_mono_of_mono'._proof_4)
h₃ : Mono (app' φ 3 mono_of_epi_of_mono_of_mono'._proof_7)
A : C
⊢ ∀ (y : A ⟶ R₂.obj' 1 mono_of_epi_of_mono_of_mono'._proof_11),
    ∃ A' π, ∃ (_ : Epi π), ∃ x, π ≫ y = x ≫ app' φ 1 mono_of_epi_of_mono_of_mono'._proof_11

Tactic:
g₁

Goal state after:
C : Type u_1
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
R₁ R₂ : ComposableArrows C 3
φ : R₁ ⟶ R₂
hR₁ :
  (mk₂ (R₁.map' 1 2 mono_of_epi_of_mono_of_mono'._proof_6 mono_of_epi_of_mono_of_mono'._proof_4)
      (R₁.map' 2 3 mono_of_epi_of_mono_of_mono'._proof_4 mono_of_epi_of_mono_of_mono'._proof_7)).Exact
hR₂ :
  (mk₂ (R₂.map' 0 1 mono_of_epi_of_mono_of_mono'._proof_9 mono_of_epi_of_mono_of_mono'._proof_11)
      (R₂.map' 1 2 mono_of_epi_of_mono_of_mono'._proof_6 mono_of_epi_of_mono_of_mono'._proof_4)).Exact
hR₂' : R₂.map' 1 3 mono_of_epi_of_mono_of_mono'._proof_11 mono_of_epi_of_mono_of_mono'._proof_7 = 0
h₀ : Epi (app' φ 0 mono_of_epi_of_mono_of_mono'._proof_13)
h₂ : Epi (app' φ 2 mono_of_epi_of_mono_of_mono'._proof_4)
h₃ : Mono (app' φ 3 mono_of_epi_of_mono_of_mono'._proof_7)
A : C
g₁ : A ⟶ R₂.obj' 1 mono_of_epi_of_mono_of_mono'._proof_11
⊢ ∃ A' π, ∃ (_ : Epi π), ∃ x, π ≫ g₁ = x ≫ app' φ 1 mono_of_epi_of_mono_of_mono'._proof_11
Module: Mathlib.Algebra.Homology.HomotopyCategory.ShortExact

Goal state before:
pp: C : Type u_1
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
S : ShortComplex (CochainComplex C ℤ)
hS : S.ShortExact
n₀ n₁ : ℤ
h : n₀ + 1 = n₁
A : C
x : A ⟶ (HomologicalComplex.homologyFunctor C (up ℤ) n₀).obj (mappingCone S.f)
A' : C
π : A' ⟶ A
w✝¹ : Epi π
x' : A' ⟶ (mappingCone S.f).X n₀
w✝ : x' ≫ (mappingCone S.f).d n₀ n₁ = 0
hx' :
  π ≫ x = HomologicalComplex.liftCycles (mappingCone S.f) x' n₁ ⋯ w✝ ≫ HomologicalComplex.homologyπ (mappingCone S.f) n₀
a : A' ⟶ S.X₁.X n₁
b : A' ⟶ S.X₂.X n₀
w : a ≫ S.X₁.d n₁ (n₁ + 1) = 0 ∧ a ≫ (S.f.f n₁ + 0) + b ≫ S.X₂.d n₀ n₁ = 0
hab : x' = a ≫ (inl S.f).v n₁ n₀ ⋯ + b ≫ (inr S.f).f n₀
⊢ HomologicalComplex.liftCycles (mappingCone S.f) x' n₁ ⋯ w✝ ≫
      HomologicalComplex.homologyπ (mappingCone S.f) n₀ ≫
        (HomologicalComplex.homologyFunctor C (up ℤ) 0).shiftMap (triangle S.f).mor₃ n₀ n₁ ⋯ =
    HomologicalComplex.liftCycles S.X₃ (x' ≫ (descShortComplex S).f n₀) n₁ ⋯ ⋯ ≫
      HomologicalComplex.homologyπ S.X₃ n₀ ≫ hS.δ n₀ n₁ h

Tactic:
add_zero

Goal state after:
C : Type u_1
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
S : ShortComplex (CochainComplex C ℤ)
hS : S.ShortExact
n₀ n₁ : ℤ
h : n₀ + 1 = n₁
A : C
x : A ⟶ (HomologicalComplex.homologyFunctor C (up ℤ) n₀).obj (mappingCone S.f)
A' : C
π : A' ⟶ A
w✝¹ : Epi π
x' : A' ⟶ (mappingCone S.f).X n₀
w✝ : x' ≫ (mappingCone S.f).d n₀ n₁ = 0
hx' :
  π ≫ x = HomologicalComplex.liftCycles (mappingCone S.f) x' n₁ ⋯ w✝ ≫ HomologicalComplex.homologyπ (mappingCone S.f) n₀
a : A' ⟶ S.X₁.X n₁
b : A' ⟶ S.X₂.X n₀
w : a ≫ S.X₁.d n₁ (n₁ + 1) = 0 ∧ a ≫ S.f.f n₁ + b ≫ S.X₂.d n₀ n₁ = 0
hab : x' = a ≫ (inl S.f).v n₁ n₀ ⋯ + b ≫ (inr S.f).f n₀
⊢ HomologicalComplex.liftCycles (mappingCone S.f) x' n₁ ⋯ w✝ ≫
      HomologicalComplex.homologyπ (mappingCone S.f) n₀ ≫
        (HomologicalComplex.homologyFunctor C (up ℤ) 0).shiftMap (triangle S.f).mor₃ n₀ n₁ ⋯ =
    HomologicalComplex.liftCycles S.X₃ (x' ≫ (descShortComplex S).f n₀) n₁ ⋯ ⋯ ≫
      HomologicalComplex.homologyπ S.X₃ n₀ ≫ hS.δ n₀ n₁ h
Module: Mathlib.CategoryTheory.Shift.Pullback

Goal state before:
pp: C : Type u_1
inst✝³ : Category.{v_1, u_1} C
A : Type u_2
B : Type u_3
inst✝² : AddMonoid A
inst✝¹ : AddMonoid B
inst✝ : HasShift C B
φ : A →+ B
X : PullbackShift C φ
a₁ a₂ : A
b₃ : B
h₃ : b₃ = φ (a₁ + a₂)
⊢ b₃ = φ a₁ + φ a₂

Tactic:
rw [h₃, φ.map_add]

Goal state after:
Module: Mathlib.CategoryTheory.Shift.Pullback

Goal state before:
pp: C : Type u_1
inst✝³ : Category.{v_1, u_1} C
A : Type u_2
B : Type u_3
inst✝² : AddMonoid A
inst✝¹ : AddMonoid B
inst✝ : HasShift C B
φ : A →+ B
X : PullbackShift C φ
a₁ a₂ : A
h₃ : φ a₁ + φ a₂ = φ (a₁ + a₂)
⊢ (Functor.LaxMonoidal.μ (shiftMonoidalFunctor C B) ((Discrete.addMonoidalFunctor φ).obj { as := a₁ })
            ((Discrete.addMonoidalFunctor φ).obj { as := a₂ })).app
        X ≫
      ((shiftMonoidalFunctor C B).map
            (Functor.LaxMonoidal.μ (Discrete.addMonoidalFunctor φ) { as := a₁ } { as := a₂ })).app
        X =
    (shiftFunctorAdd C (φ a₁) (φ a₂)).inv.app X ≫ (pullbackShiftIso C φ (a₁ + a₂) (φ a₁ + φ a₂) h₃).inv.app X

Tactic:
congr 1

Goal state after:
case e_a
C : Type u_1
inst✝³ : Category.{v_1, u_1} C
A : Type u_2
B : Type u_3
inst✝² : AddMonoid A
inst✝¹ : AddMonoid B
inst✝ : HasShift C B
φ : A →+ B
X : PullbackShift C φ
a₁ a₂ : A
h₃ : φ a₁ + φ a₂ = φ (a₁ + a₂)
⊢ ((shiftMonoidalFunctor C B).map (Functor.LaxMonoidal.μ (Discrete.addMonoidalFunctor φ) { as := a₁ } { as := a₂ })).app
      X =
    (pullbackShiftIso C φ (a₁ + a₂) (φ a₁ + φ a₂) h₃).inv.app X
Module: Mathlib.CategoryTheory.Shift.Adjunction

Goal state before:
pp: C : Type u_1
D : Type u_2
inst✝⁵ : Category.{v_1, u_1} C
inst✝⁴ : Category.{v_2, u_2} D
F : C ⥤ D
G : D ⥤ C
adj : F ⊣ G
A : Type u_3
inst✝³ : AddGroup A
inst✝² : HasShift C A
inst✝¹ : HasShift D A
a b : A
h : b + a = 0
inst✝ : F.CommShift A
X : D
⊢ a + 0 = a

Tactic:
add_zero

Goal state after:
C : Type u_1
D : Type u_2
inst✝⁵ : Category.{v_1, u_1} C
inst✝⁴ : Category.{v_2, u_2} D
F : C ⥤ D
G : D ⥤ C
adj : F ⊣ G
A : Type u_3
inst✝³ : AddGroup A
inst✝² : HasShift C A
inst✝¹ : HasShift D A
a b : A
h : b + a = 0
inst✝ : F.CommShift A
X : D
⊢ a = a
Module: Mathlib.RingTheory.IntegralDomain

Goal state before:
pp: R : Type u_3
inst✝² : CommRing R
inst✝¹ : IsDomain R
inst✝ : Finite R
⊢ IsField R

Tactic:
cases nonempty_fintype R
  exact @Field.toIsField R (@Fintype.fieldOfDomain R _ _ (Classical.decEq R) _)

Goal state after:
Module: Mathlib.LinearAlgebra.Matrix.SpecialLinearGroup

Goal state before:
pp: ι : Type u_1
F : Type u_2
inst✝² : DecidableEq ι
inst✝¹ : Fintype ι
inst✝ : CommRing F
i j : ι
hij : i ≠ j
b : F
⊢ transvection hij (-b) * transvection hij b = 1

Tactic:
← transvection_mul_neg hij (-b),

Goal state after:
ι : Type u_1
F : Type u_2
inst✝² : DecidableEq ι
inst✝¹ : Fintype ι
inst✝ : CommRing F
i j : ι
hij : i ≠ j
b : F
⊢ transvection hij (-b) * transvection hij b = transvection hij (-b) * transvection hij (- -b)
Module: Mathlib.LinearAlgebra.CliffordAlgebra.Basic

Goal state before:
pp: case add
R : Type u_1
inst✝² : CommRing R
M : Type u_2
inst✝¹ : AddCommGroup M
inst✝ : Module R M
Q : QuadraticForm R M
x y : CliffordAlgebra Q
hx : x ∈ Algebra.adjoin R (Set.range ⇑(ι Q))
hy : y ∈ Algebra.adjoin R (Set.range ⇑(ι Q))
⊢ x + y ∈ Algebra.adjoin R (Set.range ⇑(ι Q))

Tactic:
| add x y hx hy =>

Goal state after:
Module: Mathlib.LinearAlgebra.Matrix.SpecialLinearGroup

Goal state before:
pp: F : Type u_1
inst✝² : Field F
ι : Type u_2
inst✝¹ : Fintype ι
inst✝ : DecidableEq ι
i₀ : ι
D : ι → F
hD : (diagonal D).det = 1
g : ι → ι → F := fun i k ↦ if k = i then D i else if k = i₀ then (D i)⁻¹ else 1
hg_def : g = fun i k ↦ if k = i then D i else if k = i₀ then (D i)⁻¹ else 1
⊢ diagonal D = {i | i ≠ i₀}.noncommProd (fun x ↦ ↑(if hi : x ≠ i₀ then diag2n hi (D x) ⋯ else 1)) ⋯

Tactic:
apply_dite,

Goal state after:
F : Type u_1
inst✝² : Field F
ι : Type u_2
inst✝¹ : Fintype ι
inst✝ : DecidableEq ι
i₀ : ι
D : ι → F
hD : (diagonal D).det = 1
g : ι → ι → F := fun i k ↦ if k = i then D i else if k = i₀ then (D i)⁻¹ else 1
hg_def : g = fun i k ↦ if k = i then D i else if k = i₀ then (D i)⁻¹ else 1
⊢ diagonal D = {i | i ≠ i₀}.noncommProd (fun x ↦ if h : x ≠ i₀ then ↑(diag2n h (D x) ⋯) else ↑1) ⋯
Module: Mathlib.Algebra.DirectSum.Ring

Goal state before:
pp: ι : Type u_1
inst✝³ : DecidableEq ι
A : ι → Type u_2
inst✝² : (i : ι) → AddCommMonoid (A i)
inst✝¹ : AddCommMonoid ι
inst✝ : GCommSemiring A
a b : ⨁ (i : ι), A i
this : mulHom A = (mulHom A).flip
⊢ a * b = b * a

Tactic:
by
    rw [← mulHom_apply, this, AddMonoidHom.flip_apply, mulHom_apply]

Goal state after:
Module: Mathlib.Algebra.DirectSum.Decomposition

Goal state before:
pp: ι : Type u_1
M : Type u_3
σ : Type u_4
inst✝⁴ : DecidableEq ι
inst✝³ : AddCommMonoid M
inst✝² : SetLike σ M
inst✝¹ : AddSubmonoidClass σ M
ℳ : ι → σ
inst✝ : Decomposition ℳ
x : M
i j : ι
hxi : x ∈ ℳ i
hxj : x ∈ ℳ j
hx : i ≠ j
⊢ x = 0

Tactic:
← decompose_of_mem_same ℳ hxj,

Goal state after:
ι : Type u_1
M : Type u_3
σ : Type u_4
inst✝⁴ : DecidableEq ι
inst✝³ : AddCommMonoid M
inst✝² : SetLike σ M
inst✝¹ : AddSubmonoidClass σ M
ℳ : ι → σ
inst✝ : Decomposition ℳ
x : M
i j : ι
hxi : x ∈ ℳ i
hxj : x ∈ ℳ j
hx : i ≠ j
⊢ ↑(((decompose ℳ) x) j) = 0
Module: Mathlib.RingTheory.GradedAlgebra.Basic

Goal state before:
pp: case refine_2.refine_3
ι : Type u_1
R : Type u_2
A : Type u_3
σ : Type u_4
inst✝⁷ : Semiring A
inst✝⁶ : DecidableEq ι
inst✝⁵ : AddCommMonoid ι
inst✝⁴ : PartialOrder ι
inst✝³ : CanonicallyOrderedAdd ι
inst✝² : SetLike σ A
inst✝¹ : AddSubmonoidClass σ A
𝒜 : ι → σ
inst✝ : GradedRing 𝒜
i : ι
c : A
hc : c ∈ 𝒜 i
m✝ m'✝ : A
hd : ↑(((decompose 𝒜) (↑⟨c, hc⟩ * m✝)) 0) = ↑(((decompose 𝒜) ↑⟨c, hc⟩) 0) * ↑(((decompose 𝒜) m✝) 0)
he : ↑(((decompose 𝒜) (↑⟨c, hc⟩ * m'✝)) 0) = ↑(((decompose 𝒜) ↑⟨c, hc⟩) 0) * ↑(((decompose 𝒜) m'✝) 0)
⊢ ↑(((decompose 𝒜) (↑⟨c, hc⟩ * (m✝ + m'✝))) 0) = ↑(((decompose 𝒜) ↑⟨c, hc⟩) 0) * ↑(((decompose 𝒜) (m✝ + m'✝)) 0)

Tactic:
simp only [mul_add, decompose_add, add_apply, AddMemClass.coe_add, hd, he]

Goal state after:
Module: Mathlib.LinearAlgebra.Matrix.SesquilinearForm

Goal state before:
pp: R : Type u_1
n : Type u_11
n' : Type u_13
inst✝⁴ : CommRing R
inst✝³ : Fintype n
inst✝² : Fintype n'
J : Matrix n n R
J' : Matrix n' n' R
A : Matrix n' n R
A' : Matrix n n' R
inst✝¹ : DecidableEq n
inst✝ : DecidableEq n'
h : ∀ (B B' : (n → R) →ₗ[R] (n' → R) →ₗ[R] R), B = B' ↔ (toMatrix₂' R) B = (toMatrix₂' R) B'
⊢ (toLinearMap₂' R) J' ∘ₗ toLin' A = ((toLinearMap₂' R) J).compl₂ (toLin' A') ↔ J.IsAdjointPair J' A A'

Tactic:
simp_rw [h, LinearMap.toMatrix₂'_comp, LinearMap.toMatrix₂'_compl₂,
    LinearMap.toMatrix'_toLin', LinearMap.toMatrix'_toLinearMap₂']

Goal state after:
R : Type u_1
n : Type u_11
n' : Type u_13
inst✝⁴ : CommRing R
inst✝³ : Fintype n
inst✝² : Fintype n'
J : Matrix n n R
J' : Matrix n' n' R
A : Matrix n' n R
A' : Matrix n n' R
inst✝¹ : DecidableEq n
inst✝ : DecidableEq n'
h : ∀ (B B' : (n → R) →ₗ[R] (n' → R) →ₗ[R] R), B = B' ↔ (toMatrix₂' R) B = (toMatrix₂' R) B'
⊢ Aᵀ * J' = J * A' ↔ J.IsAdjointPair J' A A'
Module: Mathlib.LinearAlgebra.QuadraticForm.Basic

Goal state before:
pp: R : Type u_3
M : Type u_4
inst✝⁵ : CommSemiring R
inst✝⁴ : AddCommMonoid M
inst✝³ : Module R M
inst✝² : IsCancelAdd R
inst✝¹ : NoZeroDivisors R
inst✝ : CharZero R
B : BilinMap R M R
x y : M
h : LinearMap.IsSymm B
⊢ B.toQuadraticMap.IsOrtho x y ↔ (B x) y = 0

Tactic:
let : AddCancelMonoid R := { ‹IsCancelAdd R›, (inferInstance : AddCommMonoid R) with }
  simp_rw [isOrtho_def, B.toQuadraticMap_apply, map_add,
    LinearMap.add_apply, add_comm _ (B y y), add_add_add_comm _ _ (B y y), add_comm (B y y)]
  rw [add_eq_left (a := B x x + B y y), ← h.eq, RingHom.id_apply, add_self_eq_zero]

Goal state after:
Module: Mathlib.Algebra.DirectSum.Internal

Goal state before:
pp: ι : Type u_1
σ : Type u_2
R : Type u_4
inst✝⁵ : DecidableEq ι
inst✝⁴ : Semiring R
inst✝³ : SetLike σ R
inst✝² : AddSubmonoidClass σ R
A : ι → σ
inst✝¹ : AddMonoid ι
inst✝ : SetLike.GradedMonoid A
r : ⨁ (i : ι), ↥(A i)
r' : ↥(A 0)
j _x : ι
⊢ _x + 0 = j ↔ _x = j

Tactic:
add_zero

Goal state after:
ι : Type u_1
σ : Type u_2
R : Type u_4
inst✝⁵ : DecidableEq ι
inst✝⁴ : Semiring R
inst✝³ : SetLike σ R
inst✝² : AddSubmonoidClass σ R
A : ι → σ
inst✝¹ : AddMonoid ι
inst✝ : SetLike.GradedMonoid A
r : ⨁ (i : ι), ↥(A i)
r' : ↥(A 0)
j _x : ι
⊢ _x = j ↔ _x = j
Module: Mathlib.LinearAlgebra.CliffordAlgebra.Conjugation

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
M : Type u_2
inst✝¹ : AddCommGroup M
inst✝ : Module R M
Q : QuadraticForm R M
⊢ Submodule.map involute.toLinearMap (ι Q).range = (ι Q).range

Tactic:
ι_range_map_involute

Goal state after:
R : Type u_1
inst✝² : CommRing R
M : Type u_2
inst✝¹ : AddCommGroup M
inst✝ : Module R M
Q : QuadraticForm R M
⊢ (ι Q).range = (ι Q).range
Module: Mathlib.LinearAlgebra.CliffordAlgebra.Conjugation

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
M : Type u_2
inst✝¹ : AddCommGroup M
inst✝ : Module R M
Q : QuadraticForm R M
n : ZMod 2
⊢ ⨆ i, Submodule.map involute.toLinearMap (ι Q).range ^ ↑i = ⨆ j, (ι Q).range ^ ↑j

Tactic:
ι_range_map_involute

Goal state after:
Module: Mathlib.LinearAlgebra.CliffordAlgebra.Fold

Goal state before:
pp: R : Type u_1
M : Type u_2
N : Type u_3
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : AddCommGroup N
inst✝¹ : Module R M
inst✝ : Module R N
Q : QuadraticForm R M
f : M →ₗ[R] CliffordAlgebra Q × N →ₗ[R] N
hf : ∀ (m : M) (x : CliffordAlgebra Q) (fx : N), (f m) ((ι Q) m * x, (f m) (x, fx)) = Q m • fx
n : N
m : M
x : CliffordAlgebra Q
⊢ ((((foldr Q (foldr'Aux Q f) ⋯) (1, n)) x).1, (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) x).2) =
    (x, (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) x).2)

Tactic:
congr 1

Goal state after:
case e_fst
R : Type u_1
M : Type u_2
N : Type u_3
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : AddCommGroup N
inst✝¹ : Module R M
inst✝ : Module R N
Q : QuadraticForm R M
f : M →ₗ[R] CliffordAlgebra Q × N →ₗ[R] N
hf : ∀ (m : M) (x : CliffordAlgebra Q) (fx : N), (f m) ((ι Q) m * x, (f m) (x, fx)) = Q m • fx
n : N
m : M
x : CliffordAlgebra Q
⊢ (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) x).1 = x
Module: Mathlib.LinearAlgebra.CliffordAlgebra.Fold

Goal state before:
pp: case e_fst.add
R : Type u_1
M : Type u_2
N : Type u_3
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : AddCommGroup N
inst✝¹ : Module R M
inst✝ : Module R N
Q : QuadraticForm R M
f : M →ₗ[R] CliffordAlgebra Q × N →ₗ[R] N
hf : ∀ (m : M) (x : CliffordAlgebra Q) (fx : N), (f m) ((ι Q) m * x, (f m) (x, fx)) = Q m • fx
n : N
m : M
x y : CliffordAlgebra Q
hx : (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) x).1 = x
hy : (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) y).1 = y
⊢ (((foldr Q (foldr'Aux Q f) ⋯) (1, n)) (x + y)).1 = x + y

Tactic:
| add x y hx hy =>

Goal state after:
Module: Mathlib.LinearAlgebra.ExteriorAlgebra.Basic

Goal state before:
pp: R : Type u1
inst✝⁴ : CommRing R
M : Type u2
inst✝³ : AddCommGroup M
inst✝² : Module R M
N : Type u4
inst✝¹ : AddCommGroup N
inst✝ : Module R N
n : ℕ
f : M →ₗ[R] N
m : Fin n → M
⊢ (map f) ((ιMulti R n) m) = (ιMulti R n) (⇑f ∘ m)

Tactic:
ιMulti_apply,

Goal state after:
R : Type u1
inst✝⁴ : CommRing R
M : Type u2
inst✝³ : AddCommGroup M
inst✝² : Module R M
N : Type u4
inst✝¹ : AddCommGroup N
inst✝ : Module R N
n : ℕ
f : M →ₗ[R] N
m : Fin n → M
⊢ (map f) (List.ofFn fun i ↦ (ι R) (m i)).prod = (ιMulti R n) (⇑f ∘ m)
Module: Mathlib.LinearAlgebra.ExteriorAlgebra.Basic

Goal state before:
pp: R : Type u1
inst✝⁴ : CommRing R
M : Type u2
inst✝³ : AddCommGroup M
inst✝² : Module R M
N : Type u4
inst✝¹ : AddCommGroup N
inst✝ : Module R N
n : ℕ
f : M →ₗ[R] N
m : Fin n → M
⊢ (map f) (List.ofFn fun i ↦ (ι R) (m i)).prod = (ιMulti R n) (⇑f ∘ m)

Tactic:
ιMulti_apply,

Goal state after:
R : Type u1
inst✝⁴ : CommRing R
M : Type u2
inst✝³ : AddCommGroup M
inst✝² : Module R M
N : Type u4
inst✝¹ : AddCommGroup N
inst✝ : Module R N
n : ℕ
f : M →ₗ[R] N
m : Fin n → M
⊢ (map f) (List.ofFn fun i ↦ (ι R) (m i)).prod = (List.ofFn fun i ↦ (ι R) ((⇑f ∘ m) i)).prod
Module: Mathlib.LinearAlgebra.ExteriorPower.Basic

Goal state before:
pp: R : Type u
inst✝⁴ : CommRing R
n : ℕ
M : Type u_1
N : Type u_2
inst✝³ : AddCommGroup M
inst✝² : Module R M
inst✝¹ : AddCommGroup N
inst✝ : Module R N
f : M →ₗ[R] N
m : Fin n → M
⊢ (map n f) ((ιMulti R n) m) = (ιMulti R n) (⇑f ∘ m)

Tactic:
simp only [map, alternatingMapLinearEquiv_apply_ιMulti, AlternatingMap.compLinearMap_apply,
    Function.comp_def]

Goal state after:
Module: Mathlib.Algebra.Module.LocalizedModule.Exact

Goal state before:
pp: R : Type u_1
inst✝⁶ : CommSemiring R
S : Submonoid R
M₀ : Type u_2
inst✝⁵ : AddCommMonoid M₀
inst✝⁴ : Module R M₀
M₁ : Type u_3
inst✝³ : AddCommMonoid M₁
inst✝² : Module R M₁
M₂ : Type u_4
inst✝¹ : AddCommMonoid M₂
inst✝ : Module R M₂
g : M₀ →ₗ[R] M₁
h : M₁ →ₗ[R] M₂
ex : Exact ⇑g ⇑h
y : LocalizedModule S M₁
m : M₁
s : ↥S
hy : ∃ u, u • h m = u • 0
a : R
aS : a ∈ S
ha : ⟨a, aS⟩ • h m = ⟨a, aS⟩ • 0
⊢ mk m s ∈ Set.range ⇑((IsLocalizedModule.map S (mkLinearMap S M₀) (mkLinearMap S M₁)) g)

Tactic:
rw [smul_zero, mk_smul, ← map_smul, ex (a • m)] at ha

Goal state after:
R : Type u_1
inst✝⁶ : CommSemiring R
S : Submonoid R
M₀ : Type u_2
inst✝⁵ : AddCommMonoid M₀
inst✝⁴ : Module R M₀
M₁ : Type u_3
inst✝³ : AddCommMonoid M₁
inst✝² : Module R M₁
M₂ : Type u_4
inst✝¹ : AddCommMonoid M₂
inst✝ : Module R M₂
g : M₀ →ₗ[R] M₁
h : M₁ →ₗ[R] M₂
ex : Exact ⇑g ⇑h
y : LocalizedModule S M₁
m : M₁
s : ↥S
hy : ∃ u, u • h m = u • 0
a : R
aS : a ∈ S
ha : a • m ∈ Set.range ⇑g
⊢ mk m s ∈ Set.range ⇑((IsLocalizedModule.map S (mkLinearMap S M₀) (mkLinearMap S M₁)) g)
Module: Mathlib.Algebra.Homology.LeftResolution.Basic

Goal state before:
pp: A : Type u_1
C : Type u_2
inst✝⁵ : Category.{v_1, u_2} C
inst✝⁴ : Category.{v_2, u_1} A
ι : C ⥤ A
Λ : LeftResolution ι
X : A
inst✝³ : ι.Full
inst✝² : ι.Faithful
inst✝¹ : HasZeroMorphisms C
inst✝ : Abelian A
n : ℕ
this :
  ι.map
      (ι.preimage
        (Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
          kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n)))) =
    Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
      kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n))
⊢ ι.map ((Λ.chainComplex X).d (n + 2) (n + 1)) =
    ι.map
      ((Λ.chainComplexXIso X n).hom ≫
        ι.preimage
          (Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
            kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n))))

Tactic:
congr 1

Goal state after:
A : Type u_1
C : Type u_2
inst✝⁵ : Category.{v_1, u_2} C
inst✝⁴ : Category.{v_2, u_1} A
ι : C ⥤ A
Λ : LeftResolution ι
X : A
inst✝³ : ι.Full
inst✝² : ι.Faithful
inst✝¹ : HasZeroMorphisms C
inst✝ : Abelian A
n : ℕ
this :
  ι.map
      (ι.preimage
        (Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
          kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n)))) =
    Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
      kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n))
⊢ (Λ.chainComplex X).d (n + 2) (n + 1) =
    (Λ.chainComplexXIso X n).hom ≫
      ι.preimage
        (Λ.π.app (limit (parallelPair (ι.map ((Λ.chainComplex X).d (n + 1) n)) 0)) ≫
          kernel.ι (ι.map ((Λ.chainComplex X).d (n + 1) n)))
Module: Mathlib.LinearAlgebra.ExteriorPower.Basic

Goal state before:
pp: R : Type u
inst✝³ : CommRing R
n : ℕ
M : Type u_1
inst✝² : AddCommGroup M
inst✝¹ : Module R M
I : Type u_4
inst✝ : LinearOrder I
v : I → M
⊢ (map n (span R (range v)).subtype).range = span R (range (ιMulti_family R n v))

Tactic:
have ⟨f, hf⟩ : ∃ f : I → Submodule.span R (Set.range v), Submodule.subtype _ ∘ f = v :=
    ⟨fun i ↦ ⟨v i, Submodule.subset_span (Set.mem_range_self i)⟩, rfl⟩

Goal state after:
R : Type u
inst✝³ : CommRing R
n : ℕ
M : Type u_1
inst✝² : AddCommGroup M
inst✝¹ : Module R M
I : Type u_4
inst✝ : LinearOrder I
v : I → M
f : I → ↥(span R (range v))
hf : ⇑(span R (range v)).subtype ∘ f = v
⊢ (map n (span R (range v)).subtype).range = span R (range (ιMulti_family R n v))
Module: Mathlib.Algebra.Homology.LeftResolution.Basic

Goal state before:
pp: case succ.zero
A : Type u_1
C : Type u_2
inst✝⁵ : Category.{v_1, u_2} C
inst✝⁴ : Category.{v_2, u_1} A
ι : C ⥤ A
Λ : LeftResolution ι
X Y Z : A
f : X ⟶ Y
g : Y ⟶ Z
inst✝³ : ι.Full
inst✝² : ι.Faithful
inst✝¹ : HasZeroMorphisms C
inst✝ : Abelian A
hn : (Λ.chainComplexMap (f ≫ g)).f 0 = (Λ.chainComplexMap f ≫ Λ.chainComplexMap g).f 0
⊢ Λ.F.map (kernel.map (Λ.π.app X) (Λ.π.app Z) (ι.map (Λ.F.map (f ≫ g))) (f ≫ g) ⋯) =
    Λ.F.map
      (kernel.map (Λ.π.app X) (Λ.π.app Y) (ι.map (Λ.F.map f)) f ⋯ ≫
        kernel.map (Λ.π.app Y) (Λ.π.app Z) (ι.map (Λ.F.map g)) g ⋯)

Tactic:
congr 1

Goal state after:
case succ.zero
A : Type u_1
C : Type u_2
inst✝⁵ : Category.{v_1, u_2} C
inst✝⁴ : Category.{v_2, u_1} A
ι : C ⥤ A
Λ : LeftResolution ι
X Y Z : A
f : X ⟶ Y
g : Y ⟶ Z
inst✝³ : ι.Full
inst✝² : ι.Faithful
inst✝¹ : HasZeroMorphisms C
inst✝ : Abelian A
hn : (Λ.chainComplexMap (f ≫ g)).f 0 = (Λ.chainComplexMap f ≫ Λ.chainComplexMap g).f 0
⊢ kernel.map (Λ.π.app X) (Λ.π.app Z) (ι.map (Λ.F.map (f ≫ g))) (f ≫ g) ⋯ =
    kernel.map (Λ.π.app X) (Λ.π.app Y) (ι.map (Λ.F.map f)) f ⋯ ≫
      kernel.map (Λ.π.app Y) (Λ.π.app Z) (ι.map (Λ.F.map g)) g ⋯