Results 51 to 60 of about 5,385,866 (129)

On the Nörlund means of Vilenkin-Fourier series [PDF]

open access: yes, 2015
summary:We prove and discuss some new $( H_{p},L_{p})$-type inequalities of weighted maximal operators of Vilenkin-Nörlund means with non-increasing coefficients $\{q_{k}\colon k\geq 0\} $. These results are the best possible in a special sense.
Blahota, István,   +5 more
core   +1 more source

Littlewood-Paley and pseudo-differential operators on Herz-type spaces over Vilenkin groups

open access: yes, 2016
In this paper, we mainly investigate the boundedness of Littlewood-Paley functions and pseudo-differential operators on weighted Herz-type Hardy spaces over locally compact Vilenkin ...
Zhu, Yue
core   +1 more source

DIFFERENTIATION ON VILENKIN GROUPS USING A MATRIX

open access: yesTaiwanese Journal of Mathematics, 2011
Given a Vilenkin group G, a scalar matrix $\Lambda = [\lambda_{ij}]_{i \in \mathbb{N}, j \in \mathbb{N}_0}$, a function $f \in L^1(G)$, and a point $x \in G$ we introduce, for each $\alpha \in \mathbb{R}$, the $(\Lambda,\alpha)$ − derivative $f$ at $x$ denoted by $f^{(\Lambda,\alpha)}(x)$. We also introduce the sets: $$ M_\alpha = M(G,\Lambda,\alpha,x)
openaire   +2 more sources

Littlewood--Paley--Rubio de Francia inequality for unbounded Vilenkin systems [PDF]

open access: yes, 2023
Rubio de Francia proved the one-sided version of Littlewood--Paley inequality for arbitrary intervals. In this paper, we prove the similar inequality in the context of arbitrary Vilenkin systems (that is, for functions on infinite products of cyclic ...
Tselishchev, Anton
core   +1 more source

Convergence and divergence of Fejér means of Fourier series on one and two-dimensional Walsh and Vilenkin groups

open access: yes, 2008
It is a highly celebrated issue in dyadic harmonic analysis the pointwise convergence of the Fej?r (or (C, 1)) means of functions on the Walsh and Vilenkin groups both in the point of view of one and two dimensional cases.
György Gát
core   +1 more source

Cesàro means of integrable functions with respect to unbounded Vilenkin systems [PDF]

open access: yes, 2003
One of the most celebrated problems in dyadic harmonic analysis is the pointwise convergence of the Fejér (or (C,1)) means of functions on unbounded Vilenkin groups.
Gát, György
core   +1 more source

The l2-order of magnitude of vilenkin-fourier coefficients [PDF]

open access: yes, 1996
Let G be a compact, metrizable, zero-dimensional, abelian gruop,  i.e ., a Vilenkin group. It is well known ([2], [6] for example) that if f belongs to the Lipschitz class Lip (∝, p, G), 0 ≤ ∝ ≤  1, 1 and lt; p ≤ 2, then its Fourier transform f  belongs
Younis, Mohammed S.
core  

A Note on H1 Multipliers for Locally Compact Vilenkin Groups

open access: yes, 1998
Kitada and then Onneweer and Quek have investigated multiplier operators on Hardy spaces over locally compact Vilenkin groups. In this note, we provide an improvement to their results for the Hardy space H1 and provide examples showing that our result ...
Keith L. Phillips, James E. Daly
core   +1 more source

Generalized absolute convergence of single and double Vilenkin-Fourier series and related results [PDF]

open access: yes
summary:We consider the Vilenkin orthonormal system on a Vilenkin group $G$ and the Vilenkin-Fourier coefficients $\hat {f}(n)$, $n\in \mathbb {N}$, of functions $f\in L^p(G)$ for some ...
Kalsariya, Nayna Govindbhai   +1 more
core   +1 more source

Vanishing of dimensions and nonexistence of spectral triples on compact Vilenkin groups

open access: yes
We compute the spectral dimension, the dimension of a symmetric random walk, and the Gelfand-Kirillov dimension for compact Vilenkin groups. As a result, we show that these dimensions are zero for any compact, totally disconnected, metrizable topological
Biswas, Surajit, Saurabh, Bipul
core   +1 more source

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