proposition: Lemma is_univalent_eqalg_disp : is_univalent_disp eqalg_disp.
proof: Proof. use disp_full_sub_univalent. intros A isT isT'. use impred_isaprop. intro eq. use impred_isaprop. intros α p p'. apply (pr1 A). Qed.
imports: UniMath.Foundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Total UniMath.CategoryTheory.DisplayedCats.Isos UniMath.CategoryTheory.DisplayedCats.Univalence UniMath.CategoryTheory.DisplayedCats.Constructions UniMath.Algebra.Universal.EqAlgebras UniMath.CategoryTheory.Categories.Universal_Algebra.Algebras