Results 31 to 40 of about 5,011,031 (372)

Molecular Characterization of Hardy Spaces Associated with Twisted Convolution

open access: yesJournal of Function Spaces, 2014
We give a molecular characterization of the Hardy space associated with twisted convolution. As an application, we prove the boundedness of the local Riesz transform on the Hardy space.
Jizheng Huang, Yu Liu
doaj   +1 more source

Hardy spaces for the strip

open access: yesJournal of Mathematical Analysis and Applications, 2007
AbstractIn this paper we shall study Hardy spaces of analytic functions in a strip S. Our main result is on one hand an intrinsic characterization of the spaces and on the second that polynomials are dense. We also present an orthogonal (in H2(S)) basis of polynomials.
Sten Kaijser, Andrew Bakan
openaire   +2 more sources

Mixed Martingale Hardy Spaces [PDF]

open access: yesThe Journal of Geometric Analysis, 2020
AbstractIn this paper, we consider the martingale Hardy spaces defined with the help of the mixed $$L_{\overrightarrow{p}}$$ L p → -norm. Five mixed martingale Hardy spaces will be investigated:
Szarvas, Kristof, Weisz, Ferenc
openaire   +4 more sources

Hardy-Type Space Associated with an Infinite-Dimensional Unitary Matrix Group

open access: yesAbstract and Applied Analysis, 2013
We investigate an orthogonal system of the homogenous Hilbert-Schmidt polynomials with respect to a probability measure which is invariant under the right action of an infinite-dimensional unitary matrix group.
Oleh Lopushansky
doaj   +1 more source

Geometric Hardy and Hardy–Sobolev inequalities on Heisenberg groups

open access: yesBulletin of Mathematical Sciences, 2020
In this paper, we present geometric Hardy inequalities for the sub-Laplacian in half-spaces of stratified groups. As a consequence, we obtain the following geometric Hardy inequality in a half-space of the Heisenberg group with a sharp constant: ∫ℍ ...
Michael Ruzhansky   +2 more
doaj   +1 more source

Certain properties of continuous fractional wavelet transform on Hardy space and Morrey space [PDF]

open access: yesOpuscula Mathematica, 2021
In this paper we define a new class of continuous fractional wavelet transform (CFrWT) and study its properties in Hardy space and Morrey space. The theory developed generalize and complement some of already existing results.
Amit K. Verma, Bivek Gupta
doaj   +1 more source

The Hardy Space $$H^1$$H1 in the Rational Dunkl Setting [PDF]

open access: yes, 2013
This paper is perhaps the first attempt at a study of the Hardy space $$H^1$$H1 in the rational Dunkl setting. Following Uchiyama’s approach, we characterize $$H^1$$H1 atomically and by means of the heat maximal operator.
Jean-Philippe Anker   +3 more
semanticscholar   +1 more source

Contractive inequalities for Hardy spaces [PDF]

open access: yesFunctiones et Approximatio Commentarii Mathematici, 2018
We state and discuss several interrelated results, conjectures, and questions regarding contractive inequalities for classical $H^p$ spaces of the unit disc. We study both coefficient estimates in terms of weighted $\ell^2$ sums and the Riesz projection viewed as a map from $L^q$ to $H^p$ with $q\ge p$.
Brevig, Ole Fredrik   +3 more
openaire   +6 more sources

Herz-Type Hardy Spaces Associated with Operators

open access: yesJournal of Function Spaces, 2018
Suppose L is a nonnegative, self-adjoint differential operator. In this paper, we introduce the Herz-type Hardy spaces associated with operator L. Then, similar to the atomic and molecular decompositions of classical Herz-type Hardy spaces and the Hardy ...
Yan Chai, Yaoyao Han, Kai Zhao
doaj   +1 more source

Complete Continuity of Composition-Differentiation Operators on the Hardy Space H1

open access: yesJournal of Function Spaces, 2023
We study composition-differentiation operators on the Hardy space H1 on the unit disk. We prove that if φ is an analytic self-map of the unit disk such that the composition-differentiation operator induced by φ is bounded on the Hardy space H1, then it ...
Ali Abkar
doaj   +1 more source

Home - About - Disclaimer - Privacy