fact: Definition invertiblefunction_to_invertiblerelation {X Y : hSet} {f : X -> Y} (i : is_z_isomorphism (C := HSET) f) : is_z_isomorphism (C := REL) (function_to_bin_hrel f).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Categories.HSET.All