Definition ringofendabgr_op2 {G : abgr} : binop (monoidfun G G). Proof. intros f g. apply (monoidfuncomp g f). Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Monoids.