Definition istranshzlth ( n m k : hz ) : hzlth n m -> hzlth m k -> hzlth n k := λ lnm lmk, istranshzgth _ _ _ lmk lnm .
Require Import UniMath.MoreFoundations.PartA. Require Import UniMath.Algebra.Monoids. Require Import UniMath.Algebra.Groups.