Definition z_iso_inv_from_z_iso_disp {C : category} {D : disp_cat_data C} {x y : C} {f : z_iso x y}{xx : D x} {yy : D y} (i : z_iso_disp f xx yy) : z_iso_disp (z_iso_inv_from_z_iso f) yy xx. Proof. exists (inv_mor_disp_from_z_iso i). apply is_z_iso_inv_from_z_iso_disp. Defined.
Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.DisplayedCats.Core.