proposition: Lemma gpaco9_final clo r rg: (r \9/ paco9 gf rg) <9= gpaco9 clo r rg.
proof: Proof. intros. destruct PR. apply gpaco9_base, H. econstructor. apply rclo9_base. left. eapply paco9_mon_gen. apply H. - intros. eapply gf_mon. apply PR. intros. apply rclo9_base. apply PR0. - intros. left. apply PR. Qed.
imports: Program.Basics Paco(paco9 pacotac)