∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Preadditive C]
  {S : CategoryTheory.ShortComplex C} [inst_2 : CategoryTheory.Limits.HasZeroObject C] (s : S.Splitting),
  CategoryTheory.CategoryStruct.comp s.leftHomologyData.π
      (CategoryTheory.CategoryStruct.comp (CategoryTheory.Iso.refl 0).hom s.rightHomologyData.ι) =
    CategoryTheory.CategoryStruct.comp s.leftHomologyData.i s.rightHomologyData.p