proposition: Lemma _paco4_mon_gen (gf gf': rel4 T0 T1 T2 T3 -> rel4 T0 T1 T2 T3) r r' (LEgf: gf <5= gf') (LEr: r <4= r'): paco4 gf r <4== paco4 gf' r'.
proof: Proof. apply curry_map4. red; intros. eapply paco_mon_gen. apply PR. - intros. apply LEgf, PR0. - intros. apply LEr, PR0. Qed.
imports: Program.Basics Paco(paconotation_internal paco_internal pacotac_internal)