Definition isotoid_idtoiso_disp {C} {D : disp_cat C} (D_cat : is_univalent_disp D) {c c' : C} (e : c = c') {d : D c} {d'} (ee : transportf _ e d = d') : isotoid_disp D_cat e (idtoiso_disp e ee) = ee.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.DisplayedCats.Core. Require Import UniMath.CategoryTheory.DisplayedCats.Isos.