Definition isactionhrel (E : hrel M) : UU := ∏ r a b, E a b -> E (r * a) (r * b).
Require Import UniMath.Foundations.Sets. Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.Algebra.RigsAndRings. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Modules.Core. Require Import UniMath.Algebra.Modules.Submodule.