Lemma isZero_zero_module : @isZero mod_category (zero_module R). Proof. exact (@make_isZero mod_category (zero_module _) iscontrfromzero_module iscontrtozero_module). Defined.
Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.Algebra.Modules. Require Import UniMath.Algebra.Modules.Examples. Require Import UniMath.CategoryTheory.Limits.Zero.