Lemma isaprop_has_edgesets (G : pregraph) : isaprop (has_edgesets G). Proof. apply UniMath.CategoryTheory.Core.Categories.isaprop_has_homsets. Qed.
Require Import UniMath.Foundations.PartB. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.Combinatorics.Graph.