fact: Definition Σ_preds_bot : preds_signature := {| preds := sum unit (@preds Σ_preds) ; ar_preds := fun k => match k with inl _ => 0 | inr k' => @ar_preds Σ_preds k' end |}.
imports: Undecidability.Synthetic(Definitions DecidabilityFacts EnumerabilityFacts ListEnumerabilityFacts ReducibilityFacts) Undecidability(Shared.ListAutomation Shared.Dec) Coq(Eqdep_dec) Coq.Vectors.Vector Undecidability.Shared.Libs.PSL.Vectors(Vectors) EqdepFacts