Definition isaddmonoidfuntocommringfrac (X : commring) (S : @subabmonoid (ringmultabmonoid X)) : @ismonoidfun X (commringfrac X S) (tocommringfrac X S) := isbinop1funtocommringfrac X S ,, isunital1funtocommringfrac X S.
Require Import UniMath.Algebra.Groups. Require Import UniMath.MoreFoundations.Sets. Require Import UniMath.MoreFoundations.Orders.