fact: Definition empty_PA2_env M : env (M_domain M) := ⟨ fun n => i_f (M_domain M) Zero ([]) , fun n ar v => i_f (M_domain M) Zero ([]), fun n ar v => True ⟩.
imports: PeanoNat Lia Vector Undecidability.SOL(SOL PA2) Undecidability.Shared.Libs.PSL(Vectors) Undecidability.SOL.Util(Syntax Subst Tarski) Undecidability.Synthetic(Definitions DecidabilityFacts EnumerabilityFacts ListEnumerabilityFacts ReducibilityFacts) Undecidability.Shared.Dec