fact: Definition istranshzgeh ( n m k : hz ) : hzgeh n m -> hzgeh m k -> hzgeh n k := λ gnm gmk, istranshzleh _ _ _ gmk gnm .
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.PartA UniMath.MoreFoundations.NegativePropositions UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Algebra.RigsAndRings UniMath.NumberSystems.NaturalNumbersAlgebra