Lemma isaprop_section_nat_trans_disp_axioms {F F': section_disp} (nt : section_nat_trans_disp_data F F') : isaprop (section_nat_trans_disp_axioms nt). Proof. do 3 (apply impred; intro). apply homsets_disp. Qed.
Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.DisplayedCats.Core.