proposition: Lemma gpaco5_final clo r rg: (r \5/ paco5 gf rg) <5= gpaco5 clo r rg.
proof: Proof. intros. destruct PR. apply gpaco5_base, H. econstructor. apply rclo5_base. left. eapply paco5_mon_gen. apply H. - intros. eapply gf_mon. apply PR. intros. apply rclo5_base. apply PR0. - intros. left. apply PR. Qed.
imports: Program.Basics Paco(paco5 pacotac)