proposition: Lemma rclo4_compat clo (COM: compatible4 clo): compatible4 (rclo4 clo).
proof: Proof. econstructor. - apply rclo4_mon. - intros. induction PR. + eapply gf_mon. apply IN. intros. eapply rclo4_base. apply PR. + eapply gf_mon. * eapply COM. eapply COM. apply IN. apply H. * intros. eapply rclo4_clo. apply PR. Qed.
imports: Program.Basics Paco(paco4 pacotac)