proposition: Fact h10lc_sem_dec l φ : { c | In c l /\ ~〚c〛φ } + { forall c, In c l ->〚c〛φ }.
proof: Proof. apply list_choose_dep. intros c _; apply plus_swap, h10c_sem_dec. Qed.
imports: List Arith Undecidability.Shared.Libs.DLW.Utils(utils_decidable utils_nat) Undecidability.DiophantineConstraints(H10C)