proposition: Lemma modulebinop_runax {R : ring} {M N : module R} (f : R-mod(M, N)) : modulehombinop f (unelmodulefun M N) = f.
proof: Proof. use modulefun_paths2. intros x. use (runax N). Qed.
imports: UniMath.MoreFoundations.Tactics UniMath.Algebra.RigsAndRings UniMath.Algebra.Groups UniMath.Algebra.Monoids