Results 11 to 20 of about 629,945 (93)

On Absolute q-Cesàro Summability Methods for Double Sequences

open access: yesMathematics
In the present paper, a novel absolute summability method, denoted by |Cq,θ|s, is introduced for double sequences via the q-Cesàro matrix. The study also focuses on determining the necessary and sufficient conditions for various inclusion relations, as ...
Fadime Gökçe
doaj   +2 more sources

Absolute Nevanlinna Summability and Fourier Series [PDF]

open access: yes, 2000
We adopt here an extended version of the absolute Nevanlinna summability and apply it to study Fourier series of functions of bounded variations. The absolute Riesz summability |R,n,γ|, γ≥0, which is equivalent to the absolute Cesàro summability |C,γ ...
Dikshit, G.D.
core   +1 more source

Spectral properties of substitutions on compact alphabets

open access: yesBulletin of the London Mathematical Society, Volume 55, Issue 5, Page 2425-2445, October 2023., 2023
Abstract We consider substitutions on compact alphabets and provide sufficient conditions for the diffraction to be pure point, absolutely continuous and singular continuous. This allows one to construct examples for which the Koopman operator on the associated function space has specific spectral components.
Neil Mañibo, Dan Rust, James J. Walton
wiley   +1 more source

I-Cesàro summability of sequences of sets [PDF]

open access: yes, 2017
In this paper, we defined concept of Wijsman I-Cesàro summability for sequences of sets and investigate the relationships between the concepts of Wijsman strongly I-Cesàro summability, Wijsman strongly I-lacunary summability, Wijsman p-strongly I-Cesàro ...
Kişi, Ömer, Ulusu, Uğur
core   +2 more sources

Convergence of first‐order finite volume method based on exact Riemann solver for the complete compressible Euler equations

open access: yesNumerical Methods for Partial Differential Equations, Volume 39, Issue 5, Page 3777-3810, September 2023., 2023
Abstract Recently developed concept of dissipative measure‐valued solution for compressible flows is a suitable tool to describe oscillations and singularities possibly developed in solutions of multidimensional Euler equations. In this paper we study the convergence of the first‐order finite volume method based on the exact Riemann solver for the ...
Mária Lukáčová‐Medvid'ová   +1 more
wiley   +1 more source

An Extension of a Theorem on Cesàro Summability

open access: yes, 2021
© 2021 Taylor & Francis Group, LLC.This paper presents a general theorem dealing with absolute Cesàro summability of the series (Formula presented.) under weaker ...
KARTAL, BAĞDAGÜL
core   +1 more source

Eigenvalues of absolute Cesàro matrices [PDF]

open access: yes, 1989
A complete description is given of the eigenvalues of the matrix A associated with absolute Cesàro summability of any positive order, where A is regarded as an operator on the Banach space lp, with 1 ≤p≤ ∞
Maddox, I.J.
core   +1 more source

A note on generalized absolute Cesàro summability [PDF]

open access: yes, 2020
In the present paper , we give several improvements to the result of [2] concerning absolute Cesàro summablity of infinite ...
J South Asian, Math, Cesàro Summability
core  

A theorem on the Cesàro summability method [PDF]

open access: yes, 2011
In this paper we retrieve the backward Cesàro convergence of a real sequence u=(un) from the Cesàro summability of the general control modulo of the oscillatory behavior of integer order m of (un) under certain ...
İbrahi̇m Çanak, Çanak, İbrahi̇m
core   +2 more sources

Some inclusion theorems for absolute summability [PDF]

open access: yes, 2012
In this work the inclusion relations between absolute summability domains of a normal matrix A and certain factorable matrices are described. Thus, some classes of factorable matrices transforming the absolute summability domain of A into a set of ...
Aasma, Ants, Ants Aasma
core   +1 more source

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