APPLIED MATHEMATICS AND COMPUTATION, vol.153, no.1, pp.155-163, 2004 (Peer-Reviewed Journal)
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APPLIED MATHEMATICS AND COMPUTATION
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We obtain sufficient conditions for the series Sigma a(n), which is absolutely summable of order k by a weighted mean method, to be such that Sigma epsilon(n)a(n) is absolutely summable of order k by a triangular matrix. As corollaries we obtain a number of inclusion theorems. (C) 2003 Elsevier Inc. All rights reserved.