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Summability factors between the absolute Cesàro methods
If Σε_{n}x_{n} is summable by the method Y whenever Σx_{n} is summable by the method X, then we say that the factor ε=(ε_{n}) is of type (X,Y) and denote by (X,Y).
G. Canan Hazar Güleç
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On absolute summability factors of infinite series [PDF]
In this paper a general theorem on |A,δ|k-summability methods has been proved. This theorem includes, as a special case, a known result in [E. Savas, Factors for |A|k Summability of infinite series, Comput. Math. Appl. 53 (2007) 1045–1049]
Savaş, Ekrem
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Summability Factors for Cesaro Methods [PDF]
It is shown that if each of r and s is a nonnegative integer and {
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An application of almost increasing sequences
We extended a theorem of Mishra and Srivastava (1983–1984) on |C,1|k summability factors, using almost increasing sequences, to |N¯,pn|k summability under weaker conditions.
Hüseyin Bor
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On generalized absolute Cesàro summability factors [PDF]
In this paper, a known theorem dealing with vertical bar C, alpha, gamma; delta vertical bar(k) summability factors has been generalized for vertical bar C, alpha, beta, gamma; delta vertical bar(k) summability factors.
Tuncer, Adive Nihal, A Tuncer
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On the Introduction of Convergence Factors into Summable Series and Summable Integrals [PDF]
The object of this paper is to develop certain general theorems about convergence factors. In the case of series we shall mean by convergence factors a set of functions of a parameter which, when introduced as factors of the successive terms of the series, cause a divergent series to converge, or a series which is already convergent to converge more ...
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Local properties of Fourier series
A theorem on local property of |N¯,pn|k summability of factored Fourier series, which generalizes some known results, and also a general theorem concerning the |N¯,pn|k summability factors of Fourier series have been proved.
Hüseyin Bor
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On Absolute Summability Factors
\textit{T. M. Flett} [Proc.~Lond. Math.~Soc., III. Ser. 7, 113--141 (1957; Zbl 0109.04402)] has defined absolute summability of order \(k\) in the following manner:\ Let \(\{s_n\}\) be the sequence of partial sums of the infinite series \(\sum a_n\), and let \(\sigma_n^\alpha\) denote the \(n\)th Cesàro mean, of order \(\alpha>-1\), of \(\{s_n ...
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A new factor theorem for generalized absolute Riesz summability
The aim of this paper is to consider an absolute summability method and generalize a theorem concerning $\left|\bar{N},p_{n}\right|_{k}$ summability of infinite series to ${\varphi-\mid{\bar{N},p_n;\delta}\mid}_k$ summability of infinite series by using ...
A. Karakaş
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Factors for absolute Riesz summability methods
We prove a theorem on |N,pn;δ|k summability factors, which extends a theorem of Bor [3] on |N,pn|k summability ...
Bor, Hüseyin, Hüseyin Bor
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