∀ {A : Type u_1} {C : Type u_2} [inst : CategoryTheory.Category.{v_1, u_2} C]
  [inst_1 : CategoryTheory.Category.{v_2, u_1} A] {ι : CategoryTheory.Functor C A}
  (Λ : CategoryTheory.Abelian.LeftResolution ι) [inst_2 : CategoryTheory.Preadditive C]
  [inst_3 : CategoryTheory.Preadditive A] [inst_4 : ι.Additive],
  Λ.karoubi.F = CategoryTheory.Abelian.LeftResolution.karoubi.F Λ