Definition z_iso_is_inverse_in_precat {C : precategory_data} {a b : C} (i : z_iso a b) : is_inverse_in_precat i (inv_from_z_iso i) := pr2 i.
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.