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A new study on Riesz summability method
  • Şebnem YILDIZ
Ahi Evran Universitesi
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Quite recently, Bor \cite{Bor4} has proved a new result on weighted arithmetic mean summability factors of non-decreasing sequences, which includes some known results. In this paper, we extend his result to more general matrix summability method by using an almost increasing sequence and normal matrices in place of a positive non-decreasing sequence and weighted mean matrices, respectively.