Effectiveness of the even-type delayed mean in approximation of conjugate functions

XZ Krasniqi - Journal of Contemporary Mathematical Analysis …, 2023 - Springer
In this paper, using the even-type delayed mean of conjugate series, we have obtain the
degree of approximation for a conjugate function in the metric of the generalized Höder …

Seminormed approximation by deferred matrix means of integrable functions in space

XZ Krasniqi, W Łenski, B Szal - Results in Mathematics, 2022 - Springer
In this paper we consider some deferred matrix means of Fourier series. We give the degree
of seminormed approximation of functions from the spaces HP (w) space by such matrix …

Approximation of functions by superimposing of de la Vallée Poussin mean into deferred matrix mean of their Fourier series in Hölder metric with weight

XZ Krasniqi - Acta Mathematica Universitatis Comenianae, 2023 - iam.fmph.uniba.sk
35 APPROXIMATION OF FUNCTIONS BY SUPERIMPOSING OF DE LA VALLÉE POUSSIN
MEAN INTO DEFERRED MATRIX MEAN OF THEIR FOURIER SERIES I Page 1 Acta Math …

On approximation of bivariate functions by Abel–Poisson and conjugate Abel–Poisson means

XZ Krasniqi - The Journal of Analysis, 2024 - Springer
Firstly, we determine the degree of approximation of a bivariate periodic function by double
Abel–Poisson mean of its double Fourier series in the metric of a particular Zygmund's …

Approximation by double second type delayed arithmetic mean of periodic functions in space

XZ Krasniqi, P Kórus, B Szal - Boletin de la Sociedad Matematica …, 2023 - Springer
In this paper, we give a degree of approximation of a function in the space H p (ω, ω) by
using the second type double delayed arithmetic means of its Fourier series. Such degree of …

Seminormed approximation of functions by operators based on their Fourier series

W Łenski, B Szal, RN Mohapatra - Bulletin des Sciences Mathématiques, 2024 - Elsevier
This paper deals with the degree of approximation by an operator based on the partial sum
of the Fourier series of a function of class L p, p≥ 1. We use modulus of continuity of the …

Degree of convergence of the functions of trigonometric series in Sobolev spaces and its applications

HK Nigam, S Yadav - Journal of Inequalities and Applications, 2022 - Springer
In this paper, we study the degree of convergence of the functions of Fourier series and
conjugate Fourier series in Sobolev spaces using Riesz means. We also study some …

On approximation by Abel–Poisson and conjugate Abel–Poisson means in Hölder metric

XZ Krasniqi - Afrika Matematika, 2024 - Springer
On approximation by Abel–Poisson and conjugate Abel–Poisson means in Hölder metric |
Afrika Matematika Skip to main content SpringerLink Account Menu Find a journal Publish with …

[PDF][PDF] Degree of convergence of functions of multiple Fourier series in Sobolev spaces

HK Nigam, M Mursaleen, S Yadav - Azerbaijan Journal of Mathematics, 2022 - azjm.org
In this paper, the degree of convergence of a function of two dimensional variable of double
Fourier series in Sobolev spaces using double Riesz means is obtained. The degree of …

[PDF][PDF] On the Degree of Approximation by the Woronoi-Nörlund and Riesz Type Means in the GHM

U Deger, H Bayindir - Azerbaijan Journal of Mathematics, 2018 - azjm.org
The first results on approximation in the Hölder metric is based on the study of Prössdorf. In
1979, Leindler's paper on the generalizations of Prössdorf's theorems appeared. Later, in …