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

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝² : Category.{v_1, u_3} C
inst✝¹ : HasZeroMorphisms C
inst✝ : HasZeroObject C
K L M : HomologicalComplex C c
φ : K ⟶ L
φ' : L ⟶ M
e : c.Embedding c'
i j k : ι
i' j' k' : ι'
hj' : e.f j = j'
hi : c.prev j = i
hi' : c'.prev j' = i'
hk : c.next j = k
hk' : c'.next j' = k'
h : (K.sc' i j k).RightHomologyData
⊢ h.ι ≫
      (isColimitCokernelCofork K e hj' hi hi' (CokernelCofork.ofπ h.p ⋯) h.hp).desc
        (CokernelCofork.ofπ ((K.extend e).sc' i' j' k').g ⋯) =
    0

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝² : Category.{v_1, u_3} C
inst✝¹ : HasZeroMorphisms C
inst✝ : HasZeroObject C
K L M : HomologicalComplex C c
φ : K ⟶ L
φ' : L ⟶ M
e : c.Embedding c'
i j k : ι
i' j' k' : ι'
hj' : e.f j = j'
hi : c.prev j = i
hi' : c'.prev j' = i'
hk : c.next j = k
hk' : c'.next j' = k'
h : (K.sc' i j k).RightHomologyData
⊢ h.ι ≫
      (isColimitCokernelCofork K e hj' hi hi' (CokernelCofork.ofπ h.p ⋯) h.hp).desc
        (CokernelCofork.ofπ ((K.extend e).d j' k') ⋯) =
    0
Module: Mathlib.Algebra.Homology.Embedding.TruncGEHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁵ : Category.{v_1, u_3} C
inst✝⁴ : HasZeroMorphisms C
K L : HomologicalComplex C c'
φ : K ⟶ L
e : c.Embedding c'
inst✝³ : e.IsTruncGE
inst✝² : ∀ (i' : ι'), K.HasHomology i'
inst✝¹ : ∀ (i' : ι'), L.HasHomology i'
inst✝ : HasZeroObject C
i j k : ι
j' : ι'
hj' : e.f j = j'
hi : c.prev j = i
hk : c.next j = k
hj : e.BoundaryGE j
hk' : e.f k = c'.next j'
⊢ (K.truncGE'XIsoOpcycles e hj' hj).inv ≫
      (extend.rightHomologyData (K.truncGE' e) e hj' hi ⋯ hk ⋯ (truncGE'.homologyData K e i j k hk hj' hj).right).g' =
    (ShortComplex.RightHomologyData.canonical (K.sc j')).g' ≫ ((shortComplexFunctor C c' j').map (K.πTruncGE e)).τ₃

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁵ : Category.{v_1, u_3} C
inst✝⁴ : HasZeroMorphisms C
K L : HomologicalComplex C c'
φ : K ⟶ L
e : c.Embedding c'
inst✝³ : e.IsTruncGE
inst✝² : ∀ (i' : ι'), K.HasHomology i'
inst✝¹ : ∀ (i' : ι'), L.HasHomology i'
inst✝ : HasZeroObject C
i j k : ι
j' : ι'
hj' : e.f j = j'
hi : c.prev j = i
hk : c.next j = k
hj : e.BoundaryGE j
hk' : e.f k = c'.next j'
⊢ (K.truncGE'XIsoOpcycles e hj' hj).inv ≫
      (extend.rightHomologyData (K.truncGE' e) e hj' hi ⋯ hk ⋯ (truncGE'.homologyData K e i j k hk hj' hj).right).g' =
    ((shortComplexFunctor C c' j').obj K).fromOpcycles ≫ (K.πTruncGE e).f (c'.next j')
Module: Mathlib.Algebra.Homology.Embedding.RestrictionHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsRelIff
i j k : ι
hi : c.prev j = i
hk : c.next j = k
i' j' k' : ι'
hi' : e.f i = i'
hj' : e.f j = j'
hk' : e.f k = k'
hi'' : c'.prev j' = i'
hk'' : c'.next j' = k'
inst✝¹ : K.HasHomology j'
inst✝ : (K.restriction e).HasHomology j
this✝ : ((K.restriction e).sc' i j k).HasHomology
this : (K.sc' i' j' k').HasHomology
⊢ ((K.restriction e).sc j).iCycles ≫
      ((natIsoSc' C c i j k hi hk).hom.app (K.restriction e) ≫
            (restriction.sc'Iso K e i j k hi' hj' hk' hi'' hk'').hom ≫
              (natIsoSc' C c' i' j' k' hi'' hk'').inv.app K).τ₂ ≫
        (K.sc j').pOpcycles =
    (K.restrictionCyclesIso e j k hk hj' hk' hk'').hom ≫ K.homologyπ j' ≫ (K.sc j').homologyι

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsRelIff
i j k : ι
hi : c.prev j = i
hk : c.next j = k
i' j' k' : ι'
hi' : e.f i = i'
hj' : e.f j = j'
hk' : e.f k = k'
hi'' : c'.prev j' = i'
hk'' : c'.next j' = k'
inst✝¹ : K.HasHomology j'
inst✝ : (K.restriction e).HasHomology j
this✝ : ((K.restriction e).sc' i j k).HasHomology
this : (K.sc' i' j' k').HasHomology
⊢ ((K.restriction e).sc j).iCycles ≫
      (𝟙 (K.X (e.f j)) ≫ (K.restrictionXIso e hj').hom ≫ 𝟙 (K.X j')) ≫ (K.sc j').pOpcycles =
    (K.restrictionCyclesIso e j k hk hj' hk' hk'').hom ≫ K.homologyπ j' ≫ (K.sc j').homologyι
Module: Mathlib.Algebra.Homology.Embedding.ExtendHomology

Goal state before:
pp: case neg
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝³ : Category.{v_1, u_3} C
inst✝² : HasZeroMorphisms C
inst✝¹ : HasZeroObject C
K L M : HomologicalComplex C c
φ : K ⟶ L
φ' : L ⟶ M
e : c.Embedding c'
inst✝ : ∀ (j : ι), K.HasHomology j
j' : ι'
h : ¬∃ j, e.f j = j'
⊢ (K.extend e).HasHomology j'

Tactic:
· have hj := isZero_extend_X K e j' (by tauto)
    exact ShortComplex.HasHomology.mk'
      (ShortComplex.HomologyData.ofZeros _ (hj.eq_of_tgt _ _) (hj.eq_of_src _ _))

Goal state after:
Module: Mathlib.Algebra.Homology.Embedding.ExtendHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K : HomologicalComplex C c
e : c.Embedding c'
j : ι
j' : ι'
hj' : e.f j = j'
inst✝¹ : K.HasHomology j
inst✝ : (K.extend e).HasHomology j'
⊢ (K.sc j).iCycles =
    (K.sc j).homologyData.left.cyclesIso.hom ≫
      (extend.homologyData' K e hj' ⋯ ⋯ (K.sc j).homologyData).left.i ≫ (K.extendXIso e hj').hom

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K : HomologicalComplex C c
e : c.Embedding c'
j : ι
j' : ι'
hj' : e.f j = j'
inst✝¹ : K.HasHomology j
inst✝ : (K.extend e).HasHomology j'
⊢ (K.sc j).iCycles =
    (K.sc j).homologyData.left.cyclesIso.hom ≫
      ((K.sc j).homologyData.left.i ≫ (K.extendXIso e hj').inv) ≫ (K.extendXIso e hj').hom
Module: Mathlib.Algebra.Homology.Embedding.RestrictionHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsRelIff
i j k : ι
hi : c.prev j = i
hk : c.next j = k
i' j' k' : ι'
hi' : e.f i = i'
hj' : e.f j = j'
hk' : e.f k = k'
hi'' : c'.prev j' = i'
hk'' : c'.next j' = k'
inst✝¹ : K.HasHomology j'
inst✝ : (K.restriction e).HasHomology j
this✝ : ((K.restriction e).sc' i j k).HasHomology
this : (K.sc' i' j' k').HasHomology
⊢ (K.sc j').iCycles ≫
      ((natIsoSc' C c' i' j' k' hi'' hk'').hom.app K ≫
            (restriction.sc'Iso K e i j k hi' hj' hk' hi'' hk'').inv ≫
              (natIsoSc' C c i j k hi hk).inv.app (K.restriction e)).τ₂ ≫
        ((K.restriction e).sc j).pOpcycles =
    (K.sc j').homologyπ ≫ K.homologyι j' ≫ (K.restrictionOpcyclesIso e i j hi hi' hj' hi'').inv

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsRelIff
i j k : ι
hi : c.prev j = i
hk : c.next j = k
i' j' k' : ι'
hi' : e.f i = i'
hj' : e.f j = j'
hk' : e.f k = k'
hi'' : c'.prev j' = i'
hk'' : c'.next j' = k'
inst✝¹ : K.HasHomology j'
inst✝ : (K.restriction e).HasHomology j
this✝ : ((K.restriction e).sc' i j k).HasHomology
this : (K.sc' i' j' k').HasHomology
⊢ (K.sc j').iCycles ≫
      (𝟙 (K.X j') ≫ (K.restrictionXIso e hj').inv ≫ 𝟙 (K.X (e.f j))) ≫ ((K.restriction e).sc j).pOpcycles =
    (K.sc j').homologyπ ≫ K.homologyι j' ≫ (K.restrictionOpcyclesIso e i j hi hi' hj' hi'').inv
Module: Mathlib.Algebra.Homology.Embedding.TruncGEHomology

Goal state before:
pp: case pos
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsTruncGE
inst✝¹ : ∀ (i' : ι'), K.HasHomology i'
inst✝ : HasZeroObject C
j : ι
j' : ι'
hj' : e.f j = j'
hj : e.BoundaryGE j
⊢ IsIso (truncGE.rightHomologyMapData K e hj' ⋯ ⋯ hj).φH

Tactic:
dsimp

Goal state after:
case pos
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝² : e.IsTruncGE
inst✝¹ : ∀ (i' : ι'), K.HasHomology i'
inst✝ : HasZeroObject C
j : ι
j' : ι'
hj' : e.f j = j'
hj : e.BoundaryGE j
⊢ IsIso (𝟙 ((shortComplexFunctor C c' j').obj K).homology)
Module: Mathlib.Algebra.Homology.Embedding.ExtendHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K : HomologicalComplex C c
e : c.Embedding c'
j : ι
j' : ι'
hj' : e.f j = j'
inst✝¹ : K.HasHomology j
inst✝ : (K.extend e).HasHomology j'
⊢ (K.sc j).pOpcycles =
    (K.extendXIso e hj').inv ≫
      (extend.homologyData' K e hj' ⋯ ⋯ (K.sc j).homologyData).right.p ≫ (K.sc j).homologyData.right.opcyclesIso.inv

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁴ : Category.{v_1, u_3} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K : HomologicalComplex C c
e : c.Embedding c'
j : ι
j' : ι'
hj' : e.f j = j'
inst✝¹ : K.HasHomology j
inst✝ : (K.extend e).HasHomology j'
⊢ (K.sc j).pOpcycles =
    (K.extendXIso e hj').inv ≫
      ((K.extendXIso e hj').hom ≫ (K.sc j).homologyData.right.p) ≫ (K.sc j).homologyData.right.opcyclesIso.inv
Module: Mathlib.Algebra.Homology.Embedding.TruncLE

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝³ : Category.{v_1, u_3} C
inst✝² : HasZeroMorphisms C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝¹ : e.IsTruncLE
inst✝ : ∀ (i' : ι'), K.HasHomology i'
i j : ι
hij : c.Rel i j
i' j' : ι'
hi' : e.f i = i'
hj' : e.f j = j'
hj : ¬e.BoundaryLE j
⊢ ((K.truncLE' e).d i j).op = ((K.truncLE'XIso e hi' ⋯).hom ≫ K.d i' j' ≫ (K.truncLE'XIso e hj' hj).inv).op

Tactic:
by simpa using! K.op.truncGE'_d_eq e.op hij hj' hi' (by simpa)

Goal state after:
Module: Mathlib.Algebra.Homology.Embedding.TruncGE

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝⁷ : Category.{v_1, u_3} C
inst✝⁶ : HasZeroMorphisms C
K L M : HomologicalComplex C c'
φ : K ⟶ L
φ' : L ⟶ M
e : c.Embedding c'
inst✝⁵ : e.IsTruncGE
inst✝⁴ : ∀ (i' : ι'), K.HasHomology i'
inst✝³ : ∀ (i' : ι'), L.HasHomology i'
inst✝² : ∀ (i' : ι'), M.HasHomology i'
inst✝¹ : HasZeroObject C
inst✝ : K.IsStrictlySupported e
⊢ IsIso (K.πTruncGE e)

Tactic:
by
  suffices ∀ (i' : ι'), IsIso ((K.πTruncGE e).f i') by
    apply Hom.isIso_of_components
  intro i'
  by_cases! hn : ∃ i, e.f i = i'
  · obtain ⟨i, hi⟩ := hn
    dsimp [πTruncGE]
    rw [e.isIso_liftExtend_f_iff _ _ hi]
    infer_instance
  · refine ⟨0, ?_, ?_⟩
    all_goals
      apply (isZero_X_of_isStrictlySupported _ e i' hn).eq_of_src

Goal state after:
Module: Mathlib.Algebra.Homology.Embedding.TruncLEHomology

Goal state before:
pp: ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝² : Category.{v_1, u_3} C
inst✝¹ : Abelian C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝ : e.IsTruncLE
i : ι
hi : ¬∃ j', c'.Rel (e.f i) j'
⊢ IsIso (homologyMap (K.shortComplexTruncLE e).f (e.f i))

Tactic:
dsimp

Goal state after:
ι : Type u_1
ι' : Type u_2
c : ComplexShape ι
c' : ComplexShape ι'
C : Type u_3
inst✝² : Category.{v_1, u_3} C
inst✝¹ : Abelian C
K : HomologicalComplex C c'
e : c.Embedding c'
inst✝ : e.IsTruncLE
i : ι
hi : ¬∃ j', c'.Rel (e.f i) j'
⊢ IsIso (homologyMap (K.ιTruncLE e) (e.f i))
Module: Mathlib.Algebra.Homology.Embedding.AreComplementary

Goal state before:
pp: n₀ n₁ : ℤ
h : n₀ + 1 = n₁
i₁ i₂ : ℕ
⊢ (embeddingUpIntLE n₀).f i₁ ≠ (embeddingUpIntGE n₁).f i₂

Tactic:
dsimp

Goal state after:
n₀ n₁ : ℤ
h : n₀ + 1 = n₁
i₁ i₂ : ℕ
⊢ ¬n₀ - ↑i₁ = n₁ + ↑i₂
Module: Mathlib.Algebra.Homology.Embedding.AreComplementary

Goal state before:
pp: n₁ i : ℤ
k : ℕ
h : i + ↑k + 1 = n₁
hi : i ≤ i + ↑k
⊢ (embeddingUpIntLE (i + ↑k)).f k = i

Tactic:
dsimp

Goal state after:
n₁ i : ℤ
k : ℕ
h : i + ↑k + 1 = n₁
hi : i ≤ i + ↑k
⊢ i + ↑k - ↑k = i
Module: Mathlib.Algebra.Homology.Embedding.AreComplementary

Goal state before:
pp: case inr
ι : Type u_1
ι₁ : Type u_2
ι₂ : Type u_3
c : ComplexShape ι
c₁ : ComplexShape ι₁
c₂ : ComplexShape ι₂
C : Type u_4
inst✝³ : Category.{v_1, u_4} C
inst✝² : Abelian C
K : HomologicalComplex C c
e₁ : c₁.Embedding c
e₂ : c₂.Embedding c
inst✝¹ : e₁.IsTruncLE
inst✝ : e₂.IsTruncGE
ac : e₁.AreComplementary e₂
i₂ : ι₂
this : QuasiIsoAt (K.shortComplexTruncLE e₁).g (e₂.f i₂)
⊢ QuasiIsoAt (K.πTruncGE e₂) (e₂.f i₂)

Tactic:
dsimp

Goal state after:
case inr
ι : Type u_1
ι₁ : Type u_2
ι₂ : Type u_3
c : ComplexShape ι
c₁ : ComplexShape ι₁
c₂ : ComplexShape ι₂
C : Type u_4
inst✝³ : Category.{v_1, u_4} C
inst✝² : Abelian C
K : HomologicalComplex C c
e₁ : c₁.Embedding c
e₂ : c₂.Embedding c
inst✝¹ : e₁.IsTruncLE
inst✝ : e₂.IsTruncGE
ac : e₁.AreComplementary e₂
i₂ : ι₂
this : QuasiIsoAt (K.shortComplexTruncLE e₁).g (e₂.f i₂)
⊢ QuasiIsoAt (K.πTruncGE e₂) (e₂.f i₂)
Module: Mathlib.Algebra.Homology.DerivedCategory.FullyFaithful

Goal state before:
pp: C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
n : ℤ
A B : C
f : Q.obj ((CochainComplex.singleFunctor C n).obj A) ⟶ Q.obj ((CochainComplex.singleFunctor C n).obj B)
⊢ ∃ a, (singleFunctor C n).map a = f

Tactic:
suffices ∃ f', f = Q.map f' by
      obtain ⟨f', rfl⟩ := this
      obtain ⟨g, rfl⟩ := (CochainComplex.singleFunctor C n).map_surjective f'
      exact ⟨g, rfl⟩

Goal state after:
C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
n : ℤ
A B : C
f : Q.obj ((CochainComplex.singleFunctor C n).obj A) ⟶ Q.obj ((CochainComplex.singleFunctor C n).obj B)
⊢ ∃ f', f = Q.map f'
Module: Mathlib.Algebra.Homology.DerivedCategory.FullyFaithful

Goal state before:
pp: C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
n : ℤ
A B : C
X : CochainComplex C ℤ
w✝² : X.IsStrictlyGE n
w✝¹ : X.IsStrictlyLE n
s : X ⟶ (CochainComplex.singleFunctor C n).obj A
w✝ : IsIso (Q.map s)
g : X ⟶ (CochainComplex.singleFunctor C n).obj B
A₀ : C
e : X ≅ (HomologicalComplex.single C (ComplexShape.up ℤ) n).obj A₀
φ : A₀ ⟶ A
hφ : (CochainComplex.singleFunctor C n).map φ = e.inv ≫ s
this : IsIso ((singleFunctor C n).map φ)
⊢ IsIso ((singleFunctor C n ⋙ homologyFunctor C n).map φ)

Tactic:
dsimp

Goal state after:
C : Type u
inst✝² : Category.{v, u} C
inst✝¹ : Abelian C
inst✝ : HasDerivedCategory C
n : ℤ
A B : C
X : CochainComplex C ℤ
w✝² : X.IsStrictlyGE n
w✝¹ : X.IsStrictlyLE n
s : X ⟶ (CochainComplex.singleFunctor C n).obj A
w✝ : IsIso (Q.map s)
g : X ⟶ (CochainComplex.singleFunctor C n).obj B
A₀ : C
e : X ≅ (HomologicalComplex.single C (ComplexShape.up ℤ) n).obj A₀
φ : A₀ ⟶ A
hφ : (CochainComplex.singleFunctor C n).map φ = e.inv ≫ s
this : IsIso ((singleFunctor C n).map φ)
⊢ IsIso ((homologyFunctor C n).map ((singleFunctor C n).map φ))
Module: Mathlib.Algebra.Homology.Embedding.CochainComplex

Goal state before:
pp: C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n : ℤ
h : ∀ (i : ℤ), n ≤ i → QuasiIsoAt φ i
i : ℕ
⊢ n ≤ (embeddingUpIntGE n).f i

Tactic:
dsimp

Goal state after:
C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n : ℤ
h : ∀ (i : ℤ), n ≤ i → QuasiIsoAt φ i
i : ℕ
⊢ n ≤ n + ↑i
Module: Mathlib.Algebra.Homology.Embedding.CochainComplex

Goal state before:
pp: C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
i : ℤ
k : ℕ
h : ∀ (i_1 : ℕ) (i' : ℤ), (embeddingUpIntLE (i + ↑k)).f i_1 = i' → QuasiIsoAt φ i'
hi : i ≤ i + ↑k
⊢ (embeddingUpIntLE (i + ↑k)).f k = i

Tactic:
dsimp

Goal state after:
C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
i : ℤ
k : ℕ
h : ∀ (i_1 : ℕ) (i' : ℤ), (embeddingUpIntLE (i + ↑k)).f i_1 = i' → QuasiIsoAt φ i'
hi : i ≤ i + ↑k
⊢ i + ↑k - ↑k = i
Module: Mathlib.CategoryTheory.Localization.HomEquiv

Goal state before:
pp: C₁ : Type u_2
C₂ : Type u_3
C₃ : Type u_4
D₁ : Type u_5
D₂ : Type u_6
D₃ : Type u_7
inst✝⁸ : Category.{v_2, u_2} C₁
inst✝⁷ : Category.{v_3, u_3} C₂
inst✝⁶ : Category.{v_4, u_4} C₃
inst✝⁵ : Category.{v_5, u_5} D₁
inst✝⁴ : Category.{v_6, u_6} D₂
inst✝³ : Category.{v_7, u_7} D₃
W₁ : MorphismProperty C₁
W₂ : MorphismProperty C₂
W₃ : MorphismProperty C₃
Φ : LocalizerMorphism W₁ W₂
Ψ : LocalizerMorphism W₂ W₃
L₁ : C₁ ⥤ D₁
inst✝² : L₁.IsLocalization W₁
L₂ : C₂ ⥤ D₂
inst✝¹ : L₂.IsLocalization W₂
L₃ : C₃ ⥤ D₃
inst✝ : L₃.IsLocalization W₃
X Y : C₁
f : L₁.obj X ⟶ L₁.obj Y
G : D₁ ⥤ D₂ := Φ.localizedFunctor L₁ L₂
G' : D₂ ⥤ D₃ := Ψ.localizedFunctor L₂ L₃
e : Φ.functor ⋙ L₂ ≅ L₁ ⋙ G := CatCommSq.iso Φ.functor L₁ L₂ G
e' : Ψ.functor ⋙ L₃ ≅ L₂ ⋙ G' := CatCommSq.iso Ψ.functor L₂ L₃ G'
⊢ e'.hom.app (Φ.functor.obj X) ≫ G'.map (e.hom.app X ≫ G.map f ≫ e.inv.app Y) ≫ e'.inv.app (Φ.functor.obj Y) =
    (Φ.functor.associator Ψ.functor L₃ ≪≫
              Φ.functor.isoWhiskerLeft e' ≪≫
                (Φ.functor.associator L₂ G').symm ≪≫ Functor.isoWhiskerRight e G' ≪≫ L₁.associator G G').hom.app
        X ≫
      (G ⋙ G').map f ≫
        (Φ.functor.associator Ψ.functor L₃ ≪≫
                Φ.functor.isoWhiskerLeft e' ≪≫
                  (Φ.functor.associator L₂ G').symm ≪≫ Functor.isoWhiskerRight e G' ≪≫ L₁.associator G G').inv.app
          Y

Tactic:
dsimp

Goal state after:
C₁ : Type u_2
C₂ : Type u_3
C₃ : Type u_4
D₁ : Type u_5
D₂ : Type u_6
D₃ : Type u_7
inst✝⁸ : Category.{v_2, u_2} C₁
inst✝⁷ : Category.{v_3, u_3} C₂
inst✝⁶ : Category.{v_4, u_4} C₃
inst✝⁵ : Category.{v_5, u_5} D₁
inst✝⁴ : Category.{v_6, u_6} D₂
inst✝³ : Category.{v_7, u_7} D₃
W₁ : MorphismProperty C₁
W₂ : MorphismProperty C₂
W₃ : MorphismProperty C₃
Φ : LocalizerMorphism W₁ W₂
Ψ : LocalizerMorphism W₂ W₃
L₁ : C₁ ⥤ D₁
inst✝² : L₁.IsLocalization W₁
L₂ : C₂ ⥤ D₂
inst✝¹ : L₂.IsLocalization W₂
L₃ : C₃ ⥤ D₃
inst✝ : L₃.IsLocalization W₃
X Y : C₁
f : L₁.obj X ⟶ L₁.obj Y
G : D₁ ⥤ D₂ := Φ.localizedFunctor L₁ L₂
G' : D₂ ⥤ D₃ := Ψ.localizedFunctor L₂ L₃
e : Φ.functor ⋙ L₂ ≅ L₁ ⋙ G := CatCommSq.iso Φ.functor L₁ L₂ G
e' : Ψ.functor ⋙ L₃ ≅ L₂ ⋙ G' := CatCommSq.iso Ψ.functor L₂ L₃ G'
⊢ e'.hom.app (Φ.functor.obj X) ≫ G'.map (e.hom.app X ≫ G.map f ≫ e.inv.app Y) ≫ e'.inv.app (Φ.functor.obj Y) =
    (𝟙 (L₃.obj (Ψ.functor.obj (Φ.functor.obj X))) ≫
        e'.hom.app (Φ.functor.obj X) ≫
          𝟙 (G'.obj (L₂.obj (Φ.functor.obj X))) ≫ G'.map (e.hom.app X) ≫ 𝟙 (G'.obj (G.obj (L₁.obj X)))) ≫
      G'.map (G.map f) ≫
        (((𝟙 (G'.obj (G.obj (L₁.obj Y))) ≫ G'.map (e.inv.app Y)) ≫ 𝟙 (G'.obj (L₂.obj (Φ.functor.obj Y)))) ≫
            e'.inv.app (Φ.functor.obj Y)) ≫
          𝟙 (L₃.obj (Ψ.functor.obj (Φ.functor.obj Y)))
Module: Mathlib.Algebra.Homology.Embedding.CochainComplex

Goal state before:
pp: C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n : ℤ
h : ∀ i ≤ n, QuasiIsoAt φ i
i : ℕ
⊢ (embeddingUpIntLE n).f i ≤ n

Tactic:
dsimp

Goal state after:
C : Type u_1
inst✝⁴ : Category.{v_1, u_1} C
inst✝³ : HasZeroMorphisms C
K L : CochainComplex C ℤ
φ : K ⟶ L
inst✝² : HasZeroObject C
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n : ℤ
h : ∀ i ≤ n, QuasiIsoAt φ i
i : ℕ
⊢ n - ↑i ≤ n
Module: Mathlib.Algebra.Homology.Embedding.CochainComplex

Goal state before:
pp: C✝ : Type u_1
inst✝⁵ : Category.{v_1, u_1} C✝
C : Type u_2
inst✝⁴ : Category.{?u.7, u_2} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K L : CochainComplex C ℤ
φ : K ⟶ L
e : K ≅ L
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n✝ n i : ℤ
hi : n < i
⊢ (embeddingUpIntGE n).f (i - n).natAbs = i

Tactic:
dsimp

Goal state after:
C✝ : Type u_1
inst✝⁵ : Category.{v_1, u_1} C✝
C : Type u_2
inst✝⁴ : Category.{?u.7, u_2} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K L : CochainComplex C ℤ
φ : K ⟶ L
e : K ≅ L
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n✝ n i : ℤ
hi : n < i
⊢ n + ↑(i - n).natAbs = i
Module: Mathlib.Algebra.Homology.Embedding.CochainComplex

Goal state before:
pp: C✝ : Type u_1
inst✝⁵ : Category.{v_1, u_1} C✝
C : Type u_2
inst✝⁴ : Category.{?u.7, u_2} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K L : CochainComplex C ℤ
φ : K ⟶ L
e : K ≅ L
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n✝ n i : ℤ
hi : i < n
⊢ (embeddingUpIntLE n).f (n - i).natAbs = i

Tactic:
dsimp

Goal state after:
C✝ : Type u_1
inst✝⁵ : Category.{v_1, u_1} C✝
C : Type u_2
inst✝⁴ : Category.{?u.7, u_2} C
inst✝³ : HasZeroMorphisms C
inst✝² : HasZeroObject C
K L : CochainComplex C ℤ
φ : K ⟶ L
e : K ≅ L
inst✝¹ : ∀ (i : ℤ), HasHomology K i
inst✝ : ∀ (i : ℤ), HasHomology L i
n✝ n i : ℤ
hi : i < n
⊢ n - ↑(n - i).natAbs = i
Module: Mathlib.Algebra.Homology.DerivedCategory.Fractions

Goal state before:
pp: case refine_2
C : Type u
inst✝⁵ : Category.{v, u} C
inst✝⁴ : Abelian C
inst✝³ : HasDerivedCategory C
X Y : CochainComplex C ℤ
a b : ℤ
inst✝² : X.IsStrictlyGE a
inst✝¹ : X.IsStrictlyLE b
inst✝ : Y.IsStrictlyGE a
f : Q.obj X ⟶ Q.obj Y
X' : CochainComplex C ℤ
hX' : X'.IsStrictlyLE b
s : X' ⟶ X
hs : IsIso (Q.map s)
g : X' ⟶ Y
fac : f = inv (Q.map s) ≫ Q.map g
this : IsIso (Q.map (CochainComplex.truncGEMap s a))
⊢ f =
    inv (Q.map (CochainComplex.truncGEMap s a ≫ inv (X.πTruncGE a))) ≫
      Q.map (CochainComplex.truncGEMap g a ≫ inv (Y.πTruncGE a))

Tactic:
· simp only [Functor.map_comp, Functor.map_inv, IsIso.inv_comp, IsIso.inv_inv, assoc, fac,
      ← cancel_epi (Q.map s), IsIso.hom_inv_id_assoc]
    rw [← Functor.map_comp_assoc, ← CochainComplex.πTruncGE_naturality s a,
      Functor.map_comp, assoc, IsIso.hom_inv_id_assoc,
      ← Functor.map_comp_assoc, CochainComplex.πTruncGE_naturality g a,
      Functor.map_comp, assoc, IsIso.hom_inv_id, comp_id]

Goal state after:
Module: Mathlib.Algebra.Homology.HomologySequenceLemmas

Goal state before:
pp: C : Type u_1
ι : Type u_2
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
c : ComplexShape ι
S S₁ S₂ : ShortComplex (HomologicalComplex C c)
φ : S₁ ⟶ S₂
hS₁ : S₁.ShortExact
hS₂ : S₂.ShortExact
i : ι
⊢ (composableArrows₂ S₁ i).map' 0 1 homMk₁._proof_4 _proof_246✝ ≫ homologyMap φ.τ₂ i =
    homologyMap φ.τ₁ i ≫ (composableArrows₂ S₂ i).map' 0 1 homMk₁._proof_4 _proof_246✝

Tactic:
dsimp

Goal state after:
C : Type u_1
ι : Type u_2
inst✝¹ : Category.{v_1, u_1} C
inst✝ : Abelian C
c : ComplexShape ι
S S₁ S₂ : ShortComplex (HomologicalComplex C c)
φ : S₁ ⟶ S₂
hS₁ : S₁.ShortExact
hS₂ : S₂.ShortExact
i : ι
⊢ homologyMap S₁.f i ≫ homologyMap φ.τ₂ i = homologyMap φ.τ₁ i ≫ homologyMap S₂.f i