fact: Definition isbinopapartl { X : hSet } ( R : apart X ) ( opp : binop X ) := forall a b c : X, ( pr1 R ( opp a b ) ( opp a c ) ) -> pr1 R b c.
imports: UniMath.Tactics.EnsureStructuredProofs UniMath.Foundations.PartA UniMath.Foundations.Propositions UniMath.Foundations.NaturalNumbers UniMath.Algebra.RigsAndRings UniMath.Algebra.Domains_and_Fields UniMath.NumberSystems.Integers UniMath.Algebra.Monoids