Definition isasymmhzlth ( n m : hz ) : hzlth n m -> hzlth m n -> empty := λ lnm lmn, isasymmhzgth _ _ lmn lnm .
Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups.