proposition: Lemma nat_2_term_mono : forall n n', (n < n')%nat -> rpo (nat_2_term n) (nat_2_term n').
proof: Proof. induction 1. simpl. eapply Subterm. eleft. esplit. constructor. simpl. eapply Subterm. eleft. esplit. constructor. auto. Qed.
imports: Arith Omega Compare_dec Relations Wellfounded Tools More_nat Wf_nat AccP not_decreasing ArithRing term rpo List