proposition: Lemma MM2_HALTS_ON_ZERO_undec : undecidable MM2_HALTS_ON_ZERO.
proof: Proof. apply (undecidability_from_reducibility MMA2_HALTS_ON_ZERO_undec). apply MMA2_MM2_HALTS_ON_ZERO. Qed.
imports: Undecidability.Synthetic.Undecidability Undecidability.MinskyMachines(MMA MM2 MMA2_undec MMA2_to_MM2)