proposition: Lemma isringops_setofendabgr_op {G : abgr} : isringops (@ringofendabgr_op1 G) (@ringofendabgr_op2 G).
proof: Proof. exact (make_isringops isabgrop_ringofendabgr_op1 ismonoidop_ringofendabgr_op2 isdistr_setofendabgr_op). Defined.
imports: UniMath.MoreFoundations.Tactics UniMath.Algebra.RigsAndRings UniMath.Algebra.Groups UniMath.Algebra.Monoids