proposition: Fact fractran_exp_diophantine' n : 𝔻F (fun ν => ps 1 * exp 2 (fun2vec 1 n ν⭳)).
proof: Proof. eapply dio_fun_mult. dio auto. eapply exp_dio_lift. Qed.
imports: List Arith Undecidability.Shared.Libs(utils_tac utils_list sums rel_iter gcd pos vec) Undecidability.FRACTRAN(FRACTRAN fractran_utils prime_seq) Undecidability.H10.Dio(dio_logic dio_bounded dio_rt_closure dio_single dio_expo)