fact: Fixpoint M_enc_derivations B n := match n with | O => M_sing (M_opair ∅ (M_enc_stack B)) | S n => M_opair (numeral (S n)) (M_enc_stack (derivations B (S n))) ::: M_enc_derivations B n end.
imports: Undecidability.FOL.Syntax.Facts Undecidability.FOL.Semantics.Tarski.FullFacts Undecidability.FOL.FST Undecidability.FOL.Sets.FST Lia Undecidability.PCP(PCP Util.PCP_facts Reductions.PCPb_iff_dPCPb) Undecidability(Shared.ListAutomation)