proposition: Lemma is_univalent_disp_from_fibers {C} {D : disp_cat C} : is_univalent_in_fibers D -> is_univalent_disp D.
proof: Proof. intros H x x' e. destruct e. apply H. Qed.
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Isos