Theorem: CategoryTheory.ShortComplex.LeftHomologyData.mapCyclesIso_eq
File: Mathlib/Algebra/Homology/ShortComplex/PreservesHomology.lean

Proof steps:
state_before: C : Type u_1
D : Type u_2
inst✝⁷ : Category.{u_3, u_1} C
inst✝⁶ : Category.{u_4, u_2} D
inst✝⁵ : HasZeroMorphisms C
inst✝⁴ : HasZeroMorphisms D
S : ShortComplex C
h₁✝ : S.LeftHomologyData
h₂✝ : S.RightHomologyData
F✝ : C ⥤ D
inst✝³ : F✝.PreservesZeroMorphisms
hl : S.LeftHomologyData
hr : S.RightHomologyData
S₁ S₂ : ShortComplex C
φ : S₁ ⟶ S₂
hl₁ : S₁.LeftHomologyData
hr₁ : S₁.RightHomologyData
hl₂ : S₂.LeftHomologyData
hr₂ : S₂.RightHomologyData
h₁ : S₁.HomologyData
h₂ : S₂.HomologyData
F : C ⥤ D
inst✝² : F.PreservesZeroMorphisms
inst✝¹ : S.HasLeftHomology
inst✝ : F.PreservesLeftHomologyOf S
⊢ S.mapCyclesIso F = (hl.map F).cyclesIso ≪≫ F.mapIso hl.cyclesIso.symm
state_after: case w
C : Type u_1
D : Type u_2
inst✝⁷ : Category.{u_3, u_1} C
inst✝⁶ : Category.{u_4, u_2} D
inst✝⁵ : HasZeroMorphisms C
inst✝⁴ : HasZeroMorphisms D
S : ShortComplex C
h₁✝ : S.LeftHomologyData
h₂✝ : S.RightHomologyData
F✝ : C ⥤ D
inst✝³ : F✝.PreservesZeroMorphisms
hl : S.LeftHomologyData
hr : S.RightHomologyData
S₁ S₂ : ShortComplex C
φ : S₁ ⟶ S₂
hl₁ : S₁.LeftHomologyData
hr₁ : S₁.RightHomologyData
hl₂ : S₂.LeftHomologyData
hr₂ : S₂.RightHomologyData
h₁ : S₁.HomologyData
h₂ : S₂.HomologyData
F : C ⥤ D
inst✝² : F.PreservesZeroMorphisms
inst✝¹ : S.HasLeftHomology
inst✝ : F.PreservesLeftHomologyOf S
⊢ (S.mapCyclesIso F).hom = ((hl.map F).cyclesIso ≪≫ F.mapIso hl.cyclesIso.symm).hom
tactic: ext
state_before: case w
C : Type u_1
D : Type u_2
inst✝⁷ : Category.{u_3, u_1} C
inst✝⁶ : Category.{u_4, u_2} D
inst✝⁵ : HasZeroMorphisms C
inst✝⁴ : HasZeroMorphisms D
S : ShortComplex C
h₁✝ : S.LeftHomologyData
h₂✝ : S.RightHomologyData
F✝ : C ⥤ D
inst✝³ : F✝.PreservesZeroMorphisms
hl : S.LeftHomologyData
hr : S.RightHomologyData
S₁ S₂ : ShortComplex C
φ : S₁ ⟶ S₂
hl₁ : S₁.LeftHomologyData
hr₁ : S₁.RightHomologyData
hl₂ : S₂.LeftHomologyData
hr₂ : S₂.RightHomologyData
h₁ : S₁.HomologyData
h₂ : S₂.HomologyData
F : C ⥤ D
inst✝² : F.PreservesZeroMorphisms
inst✝¹ : S.HasLeftHomology
inst✝ : F.PreservesLeftHomologyOf S
⊢ (S.mapCyclesIso F).hom = ((hl.map F).cyclesIso ≪≫ F.mapIso hl.cyclesIso.symm).hom
state_after: case w
C : Type u_1
D : Type u_2
inst✝⁷ : Category.{u_3, u_1} C
inst✝⁶ : Category.{u_4, u_2} D
inst✝⁵ : HasZeroMorphisms C
inst✝⁴ : HasZeroMorphisms D
S : ShortComplex C
h₁✝ : S.LeftHomologyData
h₂✝ : S.RightHomologyData
F✝ : C ⥤ D
inst✝³ : F✝.PreservesZeroMorphisms
hl : S.LeftHomologyData
hr : S.RightHomologyData
S₁ S₂ : ShortComplex C
φ : S₁ ⟶ S₂
hl₁ : S₁.LeftHomologyData
hr₁ : S₁.RightHomologyData
hl₂ : S₂.LeftHomologyData
hr₂ : S₂.RightHomologyData
h₁ : S₁.HomologyData
h₂ : S₂.HomologyData
F : C ⥤ D
inst✝² : F.PreservesZeroMorphisms
inst✝¹ : S.HasLeftHomology
inst✝ : F.PreservesLeftHomologyOf S
⊢ cyclesMap' (𝟙 (S.map F)) (S.map F).leftHomologyData (S.leftHomologyData.map F) =
    cyclesMap' (𝟙 (S.map F)) (S.map F).leftHomologyData (hl.map F) ≫ F.map (cyclesMap' (𝟙 S) hl S.leftHomologyData)
tactic: dsimp [mapCyclesIso, cyclesIso]
state_before: case w
C : Type u_1
D : Type u_2
inst✝⁷ : Category.{u_3, u_1} C
inst✝⁶ : Category.{u_4, u_2} D
inst✝⁵ : HasZeroMorphisms C
inst✝⁴ : HasZeroMorphisms D
S : ShortComplex C
h₁✝ : S.LeftHomologyData
h₂✝ : S.RightHomologyData
F✝ : C ⥤ D
inst✝³ : F✝.PreservesZeroMorphisms
hl : S.LeftHomologyData
hr : S.RightHomologyData
S₁ S₂ : ShortComplex C
φ : S₁ ⟶ S₂
hl₁ : S₁.LeftHomologyData
hr₁ : S₁.RightHomologyData
hl₂ : S₂.LeftHomologyData
hr₂ : S₂.RightHomologyData
h₁ : S₁.HomologyData
h₂ : S₂.HomologyData
F : C ⥤ D
inst✝² : F.PreservesZeroMorphisms
inst✝¹ : S.HasLeftHomology
inst✝ : F.PreservesLeftHomologyOf S
⊢ cyclesMap' (𝟙 (S.map F)) (S.map F).leftHomologyData (S.leftHomologyData.map F) =
    cyclesMap' (𝟙 (S.map F)) (S.map F).leftHomologyData (hl.map F) ≫ F.map (cyclesMap' (𝟙 S) hl S.leftHomologyData)
state_after: no goals
tactic: simp only [map_cyclesMap', ← cyclesMap'_comp, Functor.map_id, comp_id,
    Functor.mapShortComplex_obj]