 It is easy to show that this era converges to the value λ formula_57 1 whose order of magnitude is determined by the first term in .This can be shown by a strong majoration of the era for which one substitutes | α("s") | = (s + 1) | α(0) |, regardless of the lengths of eras "k"(1), "k"(2), ... (In fact | α("s") | increase much faster; even in the most unfavorable case "k"(1) = "k"(2) = ... = 1 values of | α("s") | increase as "q""s" | α(0) | with "q" > 1.