fact: Definition root_tail α {R : ring α} {K : field R} {acf : algeb_closed_field K} m n f L := if zerop_1st_n_const_coeff n f L then 0%ps else root_tail_from_cγ_list m (nth_pol n f L) (nth_ns n f L).
imports: Utf8 QArith NPeano Sorting Misc Field2 Fpolynomial Fsummation Newton ConvexHull Power_series Puiseux_series Ps_add Ps_mul Ps_div PSpolynomial Puiseux_base AlgCloCharPol CharactPolyn F1Eq F1Prop Q_field PosOrder QbarM