∀ {C : Type u₁} [inst : CategoryTheory.Category.{v₁, u₁} C] [inst_1 : CategoryTheory.Limits.HasPullbacks C] {A : C}
  (f g : CategoryTheory.Subobject A) {Z : C} (h : A ⟶ Z),
  CategoryTheory.CategoryStruct.comp ((f ⊓ g).ofLE g ⋯) (CategoryTheory.CategoryStruct.comp g.arrow h) =
    CategoryTheory.CategoryStruct.comp (f ⊓ g).arrow h