Results 1 to 10 of about 123 (95)

Absolute φ − | C , α , β ; δ | k $\varphi- \vert C, \alpha, \beta; \delta\vert _{k}$ summability of infinite series [PDF]

open access: yesJournal of Inequalities and Applications, 2017
In this paper, we established a generalized theorem on a minimal set of sufficient conditions for absolute summability factors by applying a sequence of a wider class (quasi-power increasing sequence) and the absolute Cesàro φ − | C , α , β ; δ | k ...
Smita Sonker, Alka Munjal
doaj   +3 more sources

A study on absolute summability factors

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
In this study we proved theorems dealing withsummability factors giving relations between absolute Cesàro and absolute weightedsummability methods. So we deduced some results in the special cases.
G. Canan Hazar Güleç
doaj   +2 more sources

Best approximation by «angle» and the absolute Cesàro summability of double Fourier series

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
This article is devoted to the topic of absolute summation of series or Cesaro summation. The relevance of this article lies in the fact that a type of absolute summation with vector index which has not been previously studied is considered.
S. Bitimkhan, O. Mekesh
doaj   +3 more sources

Summability factors between the absolute Cesàro methods

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
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
doaj   +2 more sources

Some absolutely effective product methods [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1992
It is proved that the product method A(C,1), where (C,1) is the Cesàro arithmetic mean matrix, is totally effective under certain conditions concerning the matrix A.
H. P. Dikshit, J. A. Fridy
doaj   +2 more sources

Partial best approximations and the absolute Cesaro summability of multiple Fourier series [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2021
The article is devoted to the problem of absolute Cesaro summability of multiple trigonometric Fourier series. Taking a central place in the theory of Fourier series this problem was developed quite widely in the one-dimensional case and the ...
S. Bitimkhan, D.T. Alibieva
doaj   +3 more sources

Application of quasi-f -power increasing sequence in absolute ph - |C, a, b; d; l| of infinite series [PDF]

open access: yesMathematica Moravica, 2021
An increasing quasi-f-power sequence of a wider class has been used to establish a universal theorem on a least set of conditions, which is sufficient for an infinite series to be generalized ph-|C, a, b; d; l| k summable.
Sonker Smita   +2 more
doaj   +1 more source

A Note on Generalized Indexed Norlund Summability Factor of an Infinite Series

open access: yesInternational Journal of Analysis and Applications, 2019
In the present article, we have established a result on generalized indexed absolute Norlund summability factor by generalizing results of Mishra and Srivastava on indexed absolute Cesaro summabilty factors and Padhy et.al.
B. P. Padhy, P. Tripathy, B. B. Mishra
doaj   +2 more sources

Characterizations of summability methods derived by q-Cesàro matrix

open access: yesDera Natung Government College Research Journal
The present study  mainly aims to introduce the absolute summability method  derived  from the transformation matrix  obtained by the -Cesàro matrix   and   to establish  the  necessary and sufficient conditions for and   where   In addition, by ...
Fadime Gökçe
doaj   +1 more source

On the absolute Cesàro summability factors

open access: yesJournal of Numerical Analysis and Approximation Theory, 1991
Not available.
Hüseyin Bor
doaj   +2 more sources

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