fact: Variable (n : nat) (A : fol_form Σ2) (X : Type) (M2 : fo_model Σ2 X) (φ : nat -> X) (HA : fol_sem M2 φ A).
imports: List Arith Bool Lia Eqdep_dec 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 fo_sig fo_terms fo_logic fo_sat)