proposition: Lemma gpaco13_final clo r rg: (r \13/ paco13 gf rg) <13= gpaco13 clo r rg.
proof: Proof. intros. destruct PR. apply gpaco13_base, H. econstructor. apply rclo13_base. left. eapply paco13_mon_gen. apply H. - intros. eapply gf_mon. apply PR. intros. apply rclo13_base. apply PR0. - intros. left. apply PR. Qed.
imports: Program.Basics Paco(paco13 pacotac)