fact: Definition isbinop2funtocommringfrac (X : commring) (S : @subabmonoid (ringmultabmonoid X)) : @isbinopfun (ringmultmonoid X) (ringmultmonoid (commringfrac X S)) (tocommringfrac X S) := isbinopfuntoabmonoidfrac (ringmultabmonoid X) S.
imports: UniMath.Algebra.Groups UniMath.MoreFoundations.Sets UniMath.MoreFoundations.Orders UniMath.Algebra.Monoids