proposition: Lemma iso_stable_under_equality {C : category} {x y : C} {f g : C⟦x,y⟧} (p : g = f) (Hf : is_z_isomorphism f) : is_z_isomorphism g.
proof: Proof. induction p. exact Hf. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories UniMath.CategoryTheory.Monoidal.Structure.Symmetric