proposition: Lemma isasetmodule {R : ring} (M : module R) : isaset M.
proof: Proof. exact (pr2 (pr1 (pr1 (pr1 M)))). Defined.
imports: UniMath.MoreFoundations.Tactics UniMath.Algebra.RigsAndRings UniMath.Algebra.Groups UniMath.Algebra.Monoids