fact: Definition identity_z_iso_disp {C} {D : disp_cat C} {x : C} (xx : D x) : z_iso_disp (identity_z_iso x) xx xx := (_ ,, id_is_z_iso_disp _).
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.DisplayedCats.Core