∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {K : Type} [inst_2 : Finite K] [inst_3 : CategoryTheory.Limits.HasFiniteBiproducts C] (f : K → C) (p : Set K),
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Limits.biproduct.fromSubtype f p)
      (CategoryTheory.Limits.biproduct.toSubtype f pᶜ) =
    0