∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  [inst_2 : CategoryTheory.Limits.HasZeroObject C] {ι : Type u_1} [inst_3 : DecidableEq ι] (c : ComplexShape ι) (j : ι)
  (A : C) {Z : C} (h : A ⟶ Z),
  CategoryTheory.CategoryStruct.comp (HomologicalComplex.singleObjCyclesSelfIso c j A).hom h =
    CategoryTheory.CategoryStruct.comp (((HomologicalComplex.single C c j).obj A).iCycles j)
      (CategoryTheory.CategoryStruct.comp (HomologicalComplex.singleObjXSelf c j A).hom h)