fact: Definition quotmod_ringfun : ringfun R (ringofendabgr quotmod_abgr).
imports: UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.Algebra.RigsAndRings UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.Modules.Core UniMath.Algebra.Modules.Submodule