proposition: Theorem PCP_ZFeq B rho : standard M -> rho ⊨ solvable B -> PCPb B.
proof: Proof. Proof using M_ZF. intros H1 H2. apply PCPb_iff_dPCPb. eapply PCP_ZF2; eauto. Qed.
imports: Undecidability.FOL.ZF Undecidability.FOL.Syntax.Facts Undecidability.FOL.Semantics.Tarski.FullFacts Undecidability.FOL.Sets(ZF) Undecidability.FOL.Sets.ZF Undecidability.FOL.Reductions.PCPb_to_ZF Lia Undecidability.PCP(PCP Util.PCP_facts Reductions.PCPb_iff_dPCPb) Undecidability(Shared.ListAutomation) Morphisms