proposition: Lemma cvg_exp_coeff x : exp x @ \oo --> (0 : R).
proof: Proof. exact: (cvg_series_cvg_0 (@is_cvg_series_exp_coeff x)). Qed.
imports: mathcomp(all_ssreflect ssralg ssrint ssrnum matrix) mathcomp(interval rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(set_interval) reals ereal signed topology normedtype landau