proposition: Lemma iso_stable_under_equality {C : category} {x y : C} {f g : C⟦x,y⟧} : (g = f) → (is_z_isomorphism f) → (is_z_isomorphism g).
proof: Proof. intros pe pi. induction pe. exact pi. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Monoidal.AlternativeDefinitions.MonoidalCategoriesCurried