Results 71 to 80 of about 874 (127)

Degree of approximation of functions belonging to Lipα class and weighted (L^r,ξ(t)) class by product summability method [PDF]

Surveys in Mathematics and its Applications, 2010
A good amount of work has been done on degree of approximation of functions belonging to Lipα, Lip(α,r), Lip(ξ(t),r) and W(Lr, ξ(t)) classes using Cesàro and (generalized) Nörlund single summability methods by a number of researchers like Alexits, Sahney,
Hare Krishna Nigam
doaj  

Almost Everywhere Strong Summability of two-dimensional Walsh-Fourier Series

, 2016
It is proved a BMO-estimation for quadratic partial sums of two-dimensional Walsh-Fourier series from which it is derived an almost everywhere exponential summability of quadratic partial sums of double Walsh-Fourier series.Comment: arXiv admin note ...
Goginava, Ushangi
core  

Approximation of Signals (Functions) by Trigonometric Polynomials in Lp-Norm

International Journal of Mathematics and Mathematical Sciences, 2014
Mittal and Rhoades (1999, 2000) and Mittal et al. (2011) have initiated a study of error estimates En(f) through trigonometric-Fourier approximation (tfa) for the situations in which the summability matrix T does not have monotone rows.
M. L. Mittal, Mradul Veer Singh
doaj   +1 more source

The sequence space bv and some applications

, 2014
In this work, we give well-known results related to some properties, dual spaces and matrix transformations of the sequence space bv and introduce the matrix domain of space bv with arbitrary triangle matrix A.
Kirişci, Murat
core  

A Tauberian Theorem for Double Cesàro Summability Method

International Journal of Mathematics and Mathematical Sciences, 2016
We have generalized Littlewood Tauberian theorems for (C,k,r) summability of double sequences by using oscillating behavior and de la Vallée-Poussin mean.
Bidu Bhusan Jena, Susanta Kumar Paikray, Umakanta Misra   +2 more
doaj   +1 more source

On deferred f-statistical convergence for double sequences

Open Mathematics
In this article, we first put forward the concept of deferred f-double natural density for double sequences, where f is an unbounded modulus. Then, we combine f-density with deferred statistical convergence for double sequences and investigate deferred f-
Zhu Yahui, Shen Ang, Wang Zhongzhi, Peng Weicai   +3 more
doaj   +1 more source

UEG Week 2025 Poster Presentations

United European Gastroenterology Journal, Volume 13, Issue S8, Page S803-S1476, October 2025.
wiley   +1 more source

On the mean summability by Cesaro method of Fourier trigonometric series in two-weighted setting

Journal of Inequalities and Applications, 2006
The Cesaro summability of trigonometric Fourier series is investigated in the weighted Lebesgue spaces in a two-weight case, for one and two dimensions.
Kokilashvili V, Guven A
doaj  

Korovkin-Type Theorems for Positive Linear Operators Based on the Statistical Derivative of Deferred Cesàro Summability

Algorithms
In this paper, we introduce and investigate the concept of statistical derivatives within the framework of the deferred Cesàro summability technique, supported by illustrative examples.
Hari Mohan Srivastava, Bidu Bhusan Jena, Susanta Kumar Paikray, Umakanta Misra   +3 more
doaj   +1 more source

On the absolute Cesàro summability factors

Journal of Numerical Analysis and Approximation Theory, 1991
Not available.
Hüseyin Bor
doaj   +2 more sources