proposition: Lemma iscontrtozero_module (M : mod_category) : iscontr (mod_category⟦M, zero_module R⟧).
proof: Proof. refine (unelmodulefun _ _,, _). intros f; apply modulefun_paths. apply funextfun. exact (fun x => isProofIrrelevantUnit _ _). Defined.
imports: UniMath.Algebra.Groups UniMath.Algebra.RigsAndRings UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.Algebra.Modules UniMath.Algebra.Modules.Examples UniMath.CategoryTheory.Limits.Zero