proposition: Lemma isaprop_disp_functor_axioms {C' C : category} {F : functor C' C} {D' : disp_cat C'} {D : disp_cat C} (FF : disp_functor_data F D' D) : isaprop (disp_functor_axioms FF).
proof: Proof. apply isapropdirprod; repeat (apply impred; intros); apply homsets_disp. Qed.
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Isos