proposition: Theorem _paco12_unfold: forall (MON: _monotone12 gf) r, paco12 gf r <12== gf (upaco12 gf r).
proof: Proof. intros. apply curry_adjoint2_12. eapply _paco_unfold; apply monotone12_map; assumption. Qed.
imports: Program.Basics Paco(paconotation_internal paco_internal pacotac_internal)