∀ (C : Type u_1) [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {ι : Type u_2} (c : ComplexShape ι) (i j k : ι) (K : HomologicalComplex C c),
  ((HomologicalComplex.shortComplexFunctor' C c i j k).obj K).X₂ = K.X j