Definition isotoid (C : category) (H : is_univalent C) {a b : ob C}: z_iso a b -> a = b := invmap (make_weq _ (H a b)).
Require Import UniMath.Foundations.PartA. Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos.