Definition bin_hrel_is_z_iso_to_image_isaprop {X Y : hSet} {r : bin_hrel X Y} (p : is_z_isomorphism (C := REL) r) : ∏ x : X, isaprop (∑ y : Y, r x y).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.Categories.HSET.All.