fact: Definition form' := fol_form (Σrel 2).
imports: Undecidability.FOL(Syntax.Facts Semantics.Tarski.FullFacts Syntax.BinSig Semantics.FiniteTarski.Full) Undecidability.FOL.TRAKHTENBROT(fo_sat fo_sig fo_terms fo_logic fol_ops) Undecidability.Synthetic.DecidabilityFacts Vector Lia