fact: Variable (X : Type) (P : X -> Prop) (H1 : rec_enum_t P) (H2 : rec_enum_t (fun x => ~ P x)) (x : X) (Hx : P x \/ ~ P x).
imports: List Arith Bool Lia Eqdep_dec Undecidability.Synthetic.Definitions Undecidability.Synthetic.ReducibilityFacts Undecidability.Synthetic.InformativeDefinitions Undecidability.Synthetic.InformativeReducibilityFacts Undecidability.Shared.Libs.DLW.Utils(utils_tac utils_list utils_nat finite) Undecidability.Shared.Libs.DLW.Vec(pos vec) Undecidability.FOL.TRAKHTENBROT(notations utils fol_ops decidable)