A note on vertical bar A vertical bar(k) summability factors

Savas E., Rhoades B. E.

NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS, vol.66, no.8, pp.1879-1883, 2007 (SCI-Expanded) identifier identifier


We obtain sufficient conditions for the series Sigma a(n)lambda(n) to be absolutely summable of order k by a triangular matrix. (c) 2006 Elsevier Ltd. All rights reserved.