Results 81 to 90 of about 863 (193)

Three two-dimensional Weyl steps in the circle problem II. The logarithmic Riesz mean for a class of arithmetic functions

, 1999
1. Summary. In Part II we study arithmetic functions whose Dirichlet series satisfy a rather general type of functional equation. For the logarithmic Riesz mean of these functions we give a representation involving finite trigonometric sums. An essential
Ulrike M. A. Vorhauer, Vorhauer, Ulrike
core  

On the Riesz means of $\frac{n}{\phi(n)}$

, 2013
Let $\phi(n)$ denote the Euler-totient function. We study the error term of the general $k$-th Riesz mean of the arithmetical function $\frac {n}{\phi(n)}$ for any positive integer $k \ge 1$, namely the error term $E_k(x)$ where\[\frac{1}{k!}\sum_{n \leq
Singh, Saurabh Kumar, Sankaranarayanan, A   +1 more
core   +1 more source

Absolute summability factors for Cesàro and Riesz means

, 2022
Summary: In this paper we characterize the sets of summability factors \(({|C, 0|}_k, {|R, p_n|}_s)\) and \(({|R, p_n|}_k, {|C, 0|}_s)\), \(1 < k \leq s < \infty\), which also extends some known results.
openaire   +2 more sources

Riesz means and Greedy Sums

, 2012
One introduces the concept of greedy k-summability in such a way, that the direct product of one greedy k-summable numeric array onto another greedy n-summable numeric array to be greedy (n+k+1)-summable.
openaire   +2 more sources

RIESZ LACUNARY ALMOST CONVERGENT DOUBLE SEQUENCE SPACES DEFINED BY ORLICZ FUNCTIONS [PDF]

, 2016
The aim of this paper is to introduce a new concept for strong almost Pringsheim convergence with respect to an Orlicz function, combining with Riesz mean for double sequences and a double lacunary sequence. In addition, we study almost weighted lacunary
Basarir, Metin, Konca, Surkan
core  

Optimizing Measures of Risk: A Simplex-like Algorithm [PDF]

The minimization of general risk or dispersion measures is becoming more and more important in Portfolio Choice Theory. There are two major reasons. Firstly, the lack of symmetry in the returns of many assets provokes that the classical optimization of ...
Silvia Mayoral, Raquel Balbás, Alejandro Balbás   +2 more
core  

A bilinear fractional integral operator for Euler-Riesz systems

We establish a uniform estimate for a bilinear fractional integral operator via restricted weak-type endpoint estimates and Marcinkiewicz interpolation.
Tzavaras, Athanasios E., Alves, Nuno J., Grafakos, Loukas   +2 more
core   +1 more source

Theorems on Riesz means

Duke Mathematical Journal, 1938
Carabedian, H. L., Randels, W. C.
openaire   +2 more sources

Bazı dizi uzaylarında riesz ortalama metodu ile cesaro ortalama metodunun denkliği hakkında

, 1998
Bu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır. Yayınlanma izni olmayan tezlerin basılı kopyalarına Üniversite kütüphaneniz aracılığıyla (TÜBESS üzerinden) erişebilirsiniz.This study consist of three chapters. In the first chapter, basic
Şahin, Ramazan
core  

On relations between Nörlund and Riesz means [PDF]

Pacific Journal of Mathematics, 1973
openaire   +3 more sources