Definition pr2setofendabgr {G : abgr} (f : setofendabgr G) : ismonoidfun (pr1 f) := pr2 f.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Monoids.