∀ {C : Type u_1} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {K L : ChainComplex C ℕ} (φ : K ⟶ L) [inst_2 : HomologicalComplex.HasHomology K 0]
  [inst_3 : HomologicalComplex.HasHomology L 0],
  CategoryTheory.CategoryStruct.comp K.isoHomologyι₀.inv (HomologicalComplex.homologyMap φ 0) =
    CategoryTheory.CategoryStruct.comp (HomologicalComplex.opcyclesMap φ 0) L.isoHomologyι₀.inv