Results 41 to 50 of about 278 (68)

a.e. Convergence of $T$ means with respect to Vilenkin systems of integrable functions

open access: yes, 2021
In this paper we derive converge of $T$ means of Vilenkin-Fourier series with monotone coefficients of integrable functions in Lebesgue and Vilinkin-Lebesgue points.
Baramidze, Davit   +2 more
core  

Indexed Absolute Summability Factor of Improper Integrals [PDF]

open access: yes, 2020
In this paper, we have defined the summability for improper integrals and established a theorem on indexed absolute Cesaro summability factors of improper integral under sufficient conditions.
Acharya, D.   +5 more
core   +1 more source

A Note on Absolute Cesaro $\varphi-|C, 1; \delta; l|_k$ Summability Factor

open access: yesInternational Journal of Analysis and Applications, 2017
A positive non-decreasing sequence has been used to establish a theorem on a minimal set of sufficient conditions for an infinite series to be absolute Cesaro $\varphi-|C, 1; \delta; l|_k$ summable.
Smita Sonker   +2 more
doaj   +2 more sources

Quasi maximum likelihood estimation for strongly mixing state space models and multivariate L\'evy-driven CARMA processes

open access: yes, 2012
We consider quasi maximum likelihood (QML) estimation for general non-Gaussian discrete-ime linear state space models and equidistantly observed multivariate L\'evy-driven continuoustime autoregressive moving average (MCARMA) processes.
Schlemm, Eckhard, Stelzer, Robert
core   +1 more source

A new double series space derived by factorable matrix and four-dimensional matrix transformations

open access: yesAIMS Mathematics
In this study, we introduce a new double series space $ \left\vert F_{a, b}^{u, \theta }\right\vert _{k} $ using the four dimensional factorable matrix $ F $ and absolute summability method for $ k\geq 1 $.
Aslıhan ILIKKAN CEYLAN   +1 more
doaj   +1 more source

The convergence of equi-uniform approximation processes of integral operators in Banach spaces [PDF]

open access: yes, 2003
We consider the convergence of equi-uniform approximation processes of integral operators in Banach spaces. Applications are presented of various summation processes, interpolation type operators and convolution type operators, and furthermore several ...
Nishishiraho, Toshihiko   +1 more
core  

Ces\`{a}ro means of subsequences of partial sums of trigonometric Fourier series [PDF]

open access: yes, 2018
In 1936 Zygmunt Zalcwasser asked with respect to the trigonometric system that how "rare" can a sequence of strictly monotone increasing integers $(n_j)$ be such that the almost everywhere relation $\frac{1}{N}\sum_{j=1}^N S_{n_j}f \to f$ is fulfilled ...
Gát, György
core   +2 more sources

A note on generalized absolute Cesàro summability [PDF]

open access: yes, 2010
In this paper, a known theorem dealing with ${mid{C},1mid}_k$ summability methods has been generalized under weaker conditions for ${mid{C},alpha,beta ;deltamid}_k$ summability methods.
Hüseyin Bor
core   +1 more source

Extension of Mazhar’s theorem on summability factors

open access: yesKuwait Journal of Science, 2015
By  (X; Y ) we denote the set of all sequences such thatPa nnis summable  X wheneverPa n is summable Y , where X and Y are sum-mability methods. In this paper we characterize the set  (jC; jk ;N; p n)  fork >  1; > 􀀀1 and arbitrary positive ...
MEHMET ALI SARIGOL
doaj  

The sequence space bv and some applications

open access: yes, 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  

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