fact: Variable (n : nat) (f : recalg (S n)) (Hf : prim_rec f).
imports: Arith List Lia Undecidability.Shared.Libs.DLW(utils_tac utils_nat utils_list gcd crt sums finite pos vec) Undecidability.MuRec.Util(recalg recomp prim_min)