The Hardy Space H1 with Non-doubling Measures and Their Applications

2013 ◽  
Author(s):  
Dachun Yang ◽  
Dongyong Yang ◽  
Guoen Hu
Keyword(s):  
Hardy Space ◽  
Doubling Measures

Another characterization of the Hardy space with non doubling measures

2006 ◽  
Vol 279 (16) ◽  
pp. 1797-1807 ◽  
Author(s):  
Guoen Hu ◽  
Shuang Liang
Keyword(s):  
Hardy Space ◽  
Doubling Measures

scholarly journals Endpoint estimates for homogeneous Littlewood-Paleyg-functions with non-doubling measures

2009 ◽  
Vol 7 (2) ◽  
pp. 187-207 ◽  
Author(s):  
Dachun Yang ◽  
Dongyong Yang
Keyword(s):  
Hardy Space ◽  
Growth Condition ◽  
Radon Measure ◽  
Open Ball ◽  
Almost Everywhere ◽  
Doubling Measures

Letµbe a nonnegative Radon measure on ℝdwhich satisfies the growth condition that there exist constantsC0> 0 andn∈ (0, d] such that for allx∈ ℝdand r > 0,μ(B(x,r))≤C0rn, whereB(x, r) is the open ball centered atxand having radiusr. In this paper, when ℝdis not an initial cube which impliesµ(ℝd) = ∞, the authors prove that the homogeneous Littlewood-Paleyg-function of Tolsa is bounded from the Hardy spaceH1(µ) toL1(µ), and furthermore, that iff∈ RBMO (µ), then [ġ(f)]2is either infinite everywhere or finite almost everywhere, and in the latter case, [ġ(f)]2belongs to RBLO (µ) with norm no more thanC‖f‖RBMO(μ)2, whereC≻0is independent off.

Boundedness of linear operators via atoms on Hardy spaces with non-doubling measures

2011 ◽  
Vol 18 (2) ◽  
pp. 377-397
Author(s):  
Dachun Yang ◽  
Dongyong Yang
Keyword(s):  
Hardy Space ◽  
Polynomial Growth ◽  
Linear Operators ◽  
Sublinear Operator ◽  
Riesz Potentials ◽  
Fractional Integral Operators ◽  
Multilinear Commutators ◽  
Atomic Hardy Space ◽  
Doubling Measures ◽  
Uniformly Bounded

Abstract Let μ be a non-negative Radon measure on which satisfies only the polynomial growth condition. Let 𝒴 be a Banach space and H 1(μ) be the Hardy space of Tolsa. In this paper, the authors prove that a linear operator T is bounded from H 1(μ) to 𝒴 if and only if T maps all (p, γ)-atomic blocks into uniformly bounded elements of 𝒴; moreover, the authors prove that for a sublinear operator T bounded from L 1(μ) to L 1, ∞(μ), if T maps all (p, γ)-atomic blocks with p ∈ (1, ∞) and γ ∈ ℕ into uniformly bounded elements of L 1(μ), then T extends to a bounded sublinear operator from H 1(μ) to L 1(μ). For the localized atomic Hardy space h 1(μ), the corresponding results are also presented. Finally, these results are applied to Calderón–Zygmund operators, Riesz potentials and multilinear commutators generated by Calderón–Zygmund operators or fractional integral operators with Lipschitz functions to simplify the existing proofs in the related papers.

The maximal operator of the Marcinkiewicz-Fejér means of the 2-dimensional Vilenkin-Fourier series

2008 ◽  
Vol 45 (3) ◽  
pp. 321-331
Author(s):  
István Blahota ◽  
Ushangi Goginava
Keyword(s):  
Fourier Series ◽  
Hardy Space ◽  
Maximal Operator ◽  
Fejér Means

In this paper we prove that the maximal operator of the Marcinkiewicz-Fejér means of the 2-dimensional Vilenkin-Fourier series is not bounded from the Hardy space H2/3 ( G2 ) to the space L2/3 ( G2 ).

The range of block Hankel operators

Filomat ◽  
2018 ◽  
Vol 32 (9) ◽  
pp. 3237-3243
Author(s):  
In Hwang ◽  
In Kim ◽  
Sumin Kim
Keyword(s):  
Hardy Space ◽  
Invariant Subspace ◽  
Hankel Operators ◽  
Coprime Factorization ◽  
Backward Shift ◽  
Vector Valued

In this note we give a connection between the closure of the range of block Hankel operators acting on the vector-valued Hardy space H2Cn and the left coprime factorization of its symbol. Given a subset F ? H2Cn, we also consider the smallest invariant subspace S*F of the backward shift S* that contains F.

Interpolation on weak martingale Hardy space

2009 ◽  
Vol 25 (8) ◽  
pp. 1297-1304 ◽  
Author(s):  
Yong Jiao ◽  
Wei Chen ◽  
Pei De Liu
Keyword(s):  
Hardy Space ◽  
Martingale Hardy Space

ANALYTIC SAMPLING APPROXIMATION BY PROJECTION OPERATOR WITH APPLICATION IN DECOMPOSITION OF INSTANTANEOUS FREQUENCY

2013 ◽  
Vol 11 (05) ◽  
pp. 1350040 ◽  
Author(s):  
YOUFA LI ◽  
TAO QIAN
Keyword(s):  
Hardy Space ◽  
Numerical Experiment ◽  
Hilbert Transform ◽  
Mild Condition ◽  
Instantaneous Frequency ◽  
Projection Operator ◽  
Approximation Scheme ◽  
Special Functions ◽  
Cauchy Kernel ◽  
Sequence Of Functions

A sequence of special functions in Hardy space [Formula: see text] are constructed from Cauchy kernel on unit disk 𝔻. Applying projection operator of the sequence of functions leads to an analytic sampling approximation to f, any given function in [Formula: see text]. That is, f can be approximated by its analytic samples in 𝔻s. Under a mild condition, f is approximated exponentially by its analytic samples. By the analytic sampling approximation, a signal in [Formula: see text] can be approximately decomposed into components of positive instantaneous frequency. Using circular Hilbert transform, we apply the approximation scheme in [Formula: see text] to Ls(𝕋2) such that a signal in Ls(𝕋2) can be approximated by its analytic samples on ℂs. A numerical experiment is carried out to illustrate our results.

New variable martingale Hardy spaces

2021 ◽  
pp. 1-29
Author(s):  
Yong Jiao ◽  
Dan Zeng ◽  
Dejian Zhou
Keyword(s):  
Brownian Motion ◽  
Hardy Space ◽  
Hardy Spaces ◽  
Stochastic Integral ◽  
Lebesgue Spaces ◽  
Type Space ◽  
Variable Lebesgue Spaces ◽  
Martingale Inequalities

We investigate various variable martingale Hardy spaces corresponding to variable Lebesgue spaces $\mathcal {L}_{p(\cdot )}$ defined by rearrangement functions. In particular, we show that the dual of martingale variable Hardy space $\mathcal {H}_{p(\cdot )}^{s}$ with $0<p_{-}\leq p_{+}\leq 1$ can be described as a BMO-type space and establish martingale inequalities among these martingale Hardy spaces. Furthermore, we give an application of martingale inequalities in stochastic integral with Brownian motion.

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