proposition: Corollary paco11_mult: forall r, paco11 gf (paco11 gf r) <11= paco11 gf r.
proof: Proof. intros; eapply paco11_mult_strong, paco11_mon; [apply PR|..]; intros; left; assumption. Qed.
imports: Program.Basics Paco(paconotation_internal paco_internal pacotac_internal)