Lemma weq_reindexing_forward_ob_eq_Split_eq {c' : C'} {x' y' : D' c'} : weq (x' = y') (Split_eq x' y'). Proof. apply (make_weq reindexing_forward_ob_eq_to_Split_eq). apply (isweq_iso _ Split_eq_to_reindexing_forward_ob_eq). - exact (pr1 weq_reindexing_forward_ob_eq_Split_eq_opaque). - exact (pr2 weq_reindexing_forward_ob_eq_Split_eq_opaque). Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.DisplayedCats.Core. Require Import UniMath.CategoryTheory.DisplayedCats.Functors. Require Import UniMath.CategoryTheory.DisplayedCats.NaturalTransformations. Require Import UniMath.CategoryTheory.DisplayedCats.Isos. Require Import UniMath.CategoryTheory.DisplayedCats.Univalence. Require Import UniMath.CategoryTheory.DisplayedCats.Fibrations. Require Import UniMath.CategoryTheory.DisplayedCats.StreetFibration.