Definition morphism_from_z_iso {C : precategory_data} (a b : ob C) (f : z_iso a b) : a --> b := pr1 f.
Require Import UniMath.Foundations.PartA. Require Import UniMath.Foundations.Propositions. Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.CategoryTheory.Core.Categories.