proposition: Theorem _paco5_mult_strong: forall r, paco5 gf (upaco5 gf r) <5== paco5 gf r.
proof: Proof. intros. apply curry_map5. eapply le1_trans; [| eapply _paco_mult_strong]. apply _paco_mon; intros [] H; apply H. Qed.
imports: Program.Basics Paco(paconotation_internal paco_internal pacotac_internal)