proposition: Theorem _paco12_acc: forall l r (OBG: forall rr (INC: r <12== rr) (CIH: l <12== rr), l <12== paco12 gf rr), l <12== paco12 gf r.
proof: Proof. intros. apply uncurry_adjoint1_12. eapply _paco_acc. intros. apply uncurry_adjoint1_12 in INC. apply uncurry_adjoint1_12 in CIH. apply uncurry_adjoint2_12. eapply le12_trans. eapply (OBG _ INC CIH). apply curry_map12. apply _paco_mon; try apply le1_refl; apply curry_bij1_12. Qed.
imports: Program.Basics Paco(paconotation_internal paco_internal pacotac_internal)