∀ {C : Type u_1} {D : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} C]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} D] [inst_2 : CategoryTheory.Limits.HasZeroMorphisms C]
  [inst_3 : CategoryTheory.Limits.HasZeroMorphisms D] {S₁ S₂ : CategoryTheory.ShortComplex C} (φ : S₁ ⟶ S₂)
  (F : CategoryTheory.Functor C D) [inst_4 : F.PreservesZeroMorphisms] [inst_5 : S₁.HasLeftHomology]
  [inst_6 : S₂.HasLeftHomology] [inst_7 : F.PreservesLeftHomologyOf S₁] [inst_8 : F.PreservesLeftHomologyOf S₂],
  CategoryTheory.CategoryStruct.comp (F.map (CategoryTheory.ShortComplex.cyclesMap φ)) (S₂.mapCyclesIso F).inv =
    CategoryTheory.CategoryStruct.comp (S₁.mapCyclesIso F).inv
      (CategoryTheory.ShortComplex.cyclesMap (F.mapShortComplex.map φ))