Definition istranshzleh ( n m k : hz ) : hzleh n m -> hzleh m k -> hzleh n k . Proof. apply istransnegrel . unfold iscotrans. apply iscotranshzgth . Defined.
Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups.