Lemma isapropismodulefun {R : ring} {M N : module R} (f : M -> N) : isaprop (ismodulefun f). Proof. exact (@isofhleveldirprod 1 (isbinopfun f) (islinear f) (isapropisbinopfun f) (isapropislinear f)). Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Monoids.