fact: Hypothesis Pcomp : forall k i f gj, P f -> (forall p, @P i (@vec_pos _ k gj p)) -> P (ra_comp f gj).
imports: Arith Lia List Bool Eqdep_dec Undecidability.Shared.Libs.DLW(utils_tac utils_nat utils_list finite pos vec) Undecidability.MuRec.MuRec