proposition: Lemma gpaco7_step clo r rg: gf (gpaco7 clo rg rg) <7= gpaco7 clo r rg.
proof: Proof. intros. apply gpaco7_step_gen. eapply gf_mon. apply PR. intros. eapply gpaco7_mon. apply PR0. left; apply PR1. left; apply PR1. Qed.
imports: Program.Basics Paco(paco7 pacotac)