fact: Definition ax_P := ∀ ∀ f_P $1 $0 → ($1 ≢ t_dum) ∧ ($0 ≢ t_dum).
imports: Lia Arith Undecidability.PCP.PCP Undecidability.PCP.Util.PCP_facts Undecidability.Synthetic.DecidabilityFacts Undecidability(FOL.Utils.FullSyntax) Undecidability(FOL.FSAT) Undecidability.Shared.ListAutomation