fact: Definition total_z_iso_equiv_map {C : category} {D : disp_cat C} {xx yy : total_category D} : (∑ f : z_iso (pr1 xx) (pr1 yy), z_iso_disp f (pr2 xx) (pr2 yy)) -> z_iso xx yy := λ ff, total_z_iso (pr1 ff) (pr2 ff).
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.AxiomOfChoice UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Functors UniMath.CategoryTheory.DisplayedCats.NaturalTransformations UniMath.CategoryTheory.DisplayedCats.Isos UniMath.CategoryTheory.DisplayedCats.Univalence