Definition isaprop_is_univalent_disp {C : category} (D : disp_cat C) : isaprop (is_univalent_disp D). Proof. unfold is_univalent_disp. do 5 (use impred ; intro). apply isapropisweq. Defined.
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.