∀ {ι : Type u_3} (V : Type u_2) [inst : CategoryTheory.Category.{u_1, u_2} V] [inst_1 : CategoryTheory.Preadditive V]
  (c : ComplexShape ι) [inst_2 : CategoryTheory.CategoryWithHomology V] (i : ι) (x y : HomologicalComplex V c)
  (f₁ f₂ : x ⟶ y),
  homotopic V c f₁ f₂ →
    (HomologicalComplex.homologyFunctor V c i).map f₁ = (HomologicalComplex.homologyFunctor V c i).map f₂