Rhoades, BESavas, E2025-05-102025-05-1020040096-300310.1016/S0096-3003(03)00620-92-s2.0-2442522608https://doi.org/10.1016/S0096-3003(03)00620-9https://hdl.handle.net/20.500.14720/14659We 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.eninfo:eu-repo/semantics/closedAccessAbsolute SummabilityWeighted Mean MatrixCesaro MatrixSummability FactorArticle