proposition: Lemma gpaco2_final clo r rg: (r \2/ paco2 gf rg) <2= gpaco2 clo r rg.
proof: Proof. intros. destruct PR. apply gpaco2_base, H. econstructor. apply rclo2_base. left. eapply paco2_mon_gen. apply H. - intros. eapply gf_mon. apply PR. intros. apply rclo2_base. apply PR0. - intros. left. apply PR. Qed.
imports: Program.Basics Paco(paco2 pacotac)