proposition: Lemma is_limit_cons_inv : forall b1 b2 n c, nf (gcons b1 b2 n c) -> is_limit (gcons b1 b2 n c) -> is_limit c \/ c = zero.
proof: Proof. inversion_clear 1;auto. inversion 1;auto. 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)