Definition disp_depprod_univalent_2_0 : disp_univalent_2_0 disp_depprod_bicat. Proof. apply fiberwise_univalent_2_0_to_disp_univalent_2_0. intros a aa bb. use weqhomot. - exact (disp_depprod_bicat_idtotiso_2_0 aa bb). - intros p. induction p. use subtypePath. { intro ; apply isaprop_disp_left_adjoint_equivalence ; [ exact HB | exact (disp_depprod_univalent_2_1 HD_2_1) ]. } apply idpath. Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.PrecategoryBinProduct. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.BicategoryLaws. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.CategoryTheory.DisplayedCats.Core. Require Import UniMath.Bicategories.DisplayedBicats.DispBicat. Import DispBicat.Notations. Require Import UniMath.Bicategories.DisplayedBicats.DispUnivalence. Require Import UniMath.Bicategories.Core.Unitors. Require Import UniMath.Bicategories.Morphisms.Adjunctions. Require Import UniMath.Bicategories.Core.Univalence.