Definition z_iso_to_iso_two_cat_arrow : iso_twosided_disp (identity_z_iso x) (identity_z_iso y) f g. Proof. simple refine (_ ,, _ ,, _ ,, _). - exact θ. - exact θi. - exact z_iso_to_iso_two_cat_arrow_left. - exact z_iso_to_iso_two_cat_arrow_right. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.CategoryTheory.Core.TwoCategories. Import TwoCategories.Notations. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Total. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Strictness. Require Import UniMath.CategoryTheory.TwoSidedDisplayedCats.Discrete.