proposition: Lemma gpaco1_unfold clo r rg: gpaco1 clo r rg <1= rclo1 clo (gf (gupaco1 clo (rg \1/ r)) \1/ r).
proof: Proof. intros. destruct PR. eapply rclo1_mon. apply IN. intros. destruct PR; cycle 1. right; apply H. left. _punfold H; [|apply gpaco1_def_mon]. eapply gf_mon. apply H. intros. econstructor. eapply rclo1_mon. apply PR. intros. destruct PR0; cycle 1. right. apply H0. left. eapply paco1_mon. apply H0. intros. left. apply PR0. Qed.
imports: Program.Basics Paco(paco1 pacotac)