Definition group_algebra {G: gr} := make_algebra_simple_single_sorted' group_signature G [( op ; unel G; grinv G )].
Require Import UniMath.MoreFoundations.Notations. Require Import UniMath.Combinatorics.StandardFiniteSets. Require Import UniMath.Combinatorics.MoreLists. Require Import UniMath.Algebra.Groups. Require Import UniMath.Algebra.Universal.EqAlgebras.