proposition: Lemma gpaco0_gen_rclo clo r rg: gpaco0 (rclo0 clo) r rg <0= gpaco0 clo r rg.
proof: Proof. intros. destruct PR. econstructor. apply rclo0_compose. eapply rclo0_mon. apply IN. intros. destruct PR; [|right; apply H]. left. eapply paco0_mon_gen; intros; [apply H| |apply PR]. eapply gf_mon, rclo0_compose. apply PR. Qed.
imports: Program.Basics Paco(paco0 pacotac)