“…Then F = Z G y is in A Since T,N 0 (Gj) < oo. Also oj As e > 0 was arbitrary, AT(F (1) + F (2) ) ^ N(F (1) )+N(F (2) ), which concludes the proof (ii) In establishing (ii) we will use the fact that a normed linear space is complete if and only if every absolutely summable series is summable. So let {F (l) } be an absolutely summable series in (A, N).…”