Results 11 to 20 of about 27,509 (180)

Weighted norm inequalities of Bochner–Riesz means

open access: yesJournal of Mathematical Analysis and Applications, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +4 more sources

On radial Fourier multipliers and almost everywhere convergence [PDF]

open access: yes, 2014
We study a.e. convergence on $L^p$, and Lorentz spaces $L^{p,q}$, $p>\tfrac{2d}{d-1}$, for variants of Riesz means at the critical index $d(\tfrac 12-\tfrac 1p)-\tfrac12$.
Lee, Sanghyuk, Seeger, Andreas
core   +1 more source

Riesz Means on Locally Symmetric Spaces

open access: yesComplex Analysis and Operator Theory, 2022
We prove that for a certain class of $n$ dimensional rank one locally symmetric spaces, if $f \in L^p$, $1\leq p \leq 2$, then the Riesz means of order $z$ of $f$ converge to $f$ almost everywhere, for $\operatorname{Re}z> (n-1)(1/p-1/2).$
openaire   +2 more sources

Positivity and lower bounds for the density of Wiener functionals [PDF]

open access: yes, 2012
We consider a functional on the Wiener space which is smooth and not degenerated in Malliavin sense and we give a criterion of strict positivity of the density. We also give lower bounds for the density.
Bally, V., Caramellino, L.
core   +6 more sources

On the Hyperbolic Riesz Means [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
We define the hyperbolic Riesz means in R 2 {{\mathbf {R}}^2} by H λ f = ( m λ
openaire   +2 more sources

A class of fractional Ornstein–Uhlenbeck processes mixed with a Gamma distribution

open access: yesModern Stochastics: Theory and Applications, 2022
We consider a sequence of fractional Ornstein–Uhlenbeck processes, that are defined as solutions of a family of stochastic Volterra equations with a kernel given by the Riesz derivative kernel, and leading coefficients given by a sequence of independent ...
Luigi Amedeo Bianchi   +2 more
doaj   +1 more source

From refined estimates for spherical harmonics to a sharp multiplier theorem on the Grushin sphere [PDF]

open access: yes, 2019
We prove a sharp multiplier theorem of Mihlin-H\"ormander type for the Grushin operator on the unit sphere in $\mathbb{R}^3$, and a corresponding boundedness result for the associated Bochner-Riesz means.
Casarino, Valentina   +2 more
core   +2 more sources

Existence of Solutions for Anti-Periodic Fractional Differential Inclusions Involving ψ-Riesz-Caputo Fractional Derivative

open access: yesMathematics, 2019
In this paper, we investigate the existence of solutions for a class of anti-periodic fractional differential inclusions with ψ -Riesz-Caputo fractional derivative. A new definition of ψ -Riesz-Caputo fractional derivative of order
Dandan Yang, Chuanzhi Bai
doaj   +1 more source

On the Localization of the Riesz Means of Multiple Fourier Series of Distributions

open access: yesAbstract and Applied Analysis, 2011
We study special partial sums of multiple Fourier series of distributions. We obtain sufficient conditions of summation of Riesz means of Fourier expansions of distributions with compact support.
A. A. Rakhimov
doaj   +1 more source

Symmetric Besov-Bessel Spaces

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2014
In this paper we introduce the symmetric Besov-Bessel spaces. Next, we give a Sonine formula for generalized Bessel functions. Finally, we give a characterization of these spaces using the Bochner-Riesz means.
Houissa Khadija, Sifi Mohamed
doaj   +1 more source

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