Definition disp_functor_over_id_composite : disp_functor (functor_identity C) D₁ D₃. Proof. simple refine (_ ,, _). - exact disp_functor_over_id_composite_data. - exact disp_functor_over_id_composite_axioms. Defined.
Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.DisplayedCats.Core. Require Import UniMath.CategoryTheory.DisplayedCats.Isos.