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Some further extensions of absolute cesàro summability for double series
(Springer International Publishing AG, 2013)
In a recent paper [SavaAY and Rhoades in Appl. Math. Lett. 22:1462-1466, 2009], the authors extended the result of Flett [Proc. Lond. Math. Soc. 7:113-141, 1957] to double summability. In this paper, we consider some further ...
On general summability factor theorems
(Springer International Publishing AG, 2007)
The goal of this paper is to obtain sufficient and (different) necessary conditions for a series Sigma a(n), which is absolutely summable of order k by a triangular matrix method A, 1 < k <= s < infinity, to be such that ...
A note on generalized absolute summability factors
(Univ Osijek, 2010-12)
In this paper, a general theorem on vertical bar A, delta vertical bar k-summability factors of infinite series has been proved under weaker conditions.