proposition: Lemma le_cons_tail alpha beta n gamma gamma': gamma t2<= gamma' -> gcons alpha beta n gamma t2<= gcons alpha beta n gamma'.
proof: Proof. destruct 1. - subst gamma';left;auto with T2. - right;auto with T2. Qed.
imports: Coq(Arith List Lia Compare_dec Relations Wellfounded RelationClasses) hydras(Epsilon0) hydras(More_Arith Restriction) hydras(ON_Generic) hydras(rpo.term rpo.rpo) hydras(T2) hydras(Compat815)