Definition module_image {R : ring} {A B : module R} (f : modulefun A B) : submodule B := make_submodule _ (issubmodule_image f).
Require Import UniMath.MoreFoundations.Subtypes. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Modules.Core.