Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures

Let µ be a nonnegative Radon measure on ℝd which satisfies the growth condition that there exist constants C0 > 0 and n ∈ (0, d] such that for all x ∈ ℝd and r > 0, μ(B(x,r))≤C0rn, where B(x, r) is the open ball centered at x and having radius r . In this paper, when ℝd is not an initial cube...

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Main Authors: Dachun Yang, Dongyong Yang
Format: Article
Language:English
Published: Wiley 2009-01-01
Series:Journal of Function Spaces and Applications
Online Access:http://dx.doi.org/10.1155/2009/284849
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author Dachun Yang
Dongyong Yang
author_facet Dachun Yang
Dongyong Yang
author_sort Dachun Yang
collection DOAJ
description Let µ be a nonnegative Radon measure on ℝd which satisfies the growth condition that there exist constants C0 > 0 and n ∈ (0, d] such that for all x ∈ ℝd and r > 0, μ(B(x,r))≤C0rn, where B(x, r) is the open ball centered at x and having radius r . In this paper, when ℝd is not an initial cube which implies µ(ℝd) = ∞, the authors prove that the homogeneous Littlewood-Paley g-function of Tolsa is bounded from the Hardy space H1 (µ) to L1(µ), and furthermore, that if f ∈ RBMO (µ), then [ġ(f )]2 is either infinite everywhere or finite almost everywhere, and in the latter case, [ġ(f)]2 belongs to RBLO (µ) with norm no more than C‖f‖RBMO(μ)2, where C≻0 is independent of f .
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spelling doaj-art-ac76b6b8f0bd4266a83802e46687dfd52025-02-03T01:22:18ZengWileyJournal of Function Spaces and Applications0972-68022009-01-017218720710.1155/2009/284849Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measuresDachun Yang0Dongyong Yang1School of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing 100875, ChinaSchool of Mathematical Sciences, Beijing Normal University, Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing 100875, ChinaLet µ be a nonnegative Radon measure on ℝd which satisfies the growth condition that there exist constants C0 > 0 and n ∈ (0, d] such that for all x ∈ ℝd and r > 0, μ(B(x,r))≤C0rn, where B(x, r) is the open ball centered at x and having radius r . In this paper, when ℝd is not an initial cube which implies µ(ℝd) = ∞, the authors prove that the homogeneous Littlewood-Paley g-function of Tolsa is bounded from the Hardy space H1 (µ) to L1(µ), and furthermore, that if f ∈ RBMO (µ), then [ġ(f )]2 is either infinite everywhere or finite almost everywhere, and in the latter case, [ġ(f)]2 belongs to RBLO (µ) with norm no more than C‖f‖RBMO(μ)2, where C≻0 is independent of f .http://dx.doi.org/10.1155/2009/284849
spellingShingle Dachun Yang
Dongyong Yang
Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
Journal of Function Spaces and Applications
title Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
title_full Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
title_fullStr Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
title_full_unstemmed Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
title_short Endpoint estimates for homogeneous Littlewood-Paley g-functions with non-doubling measures
title_sort endpoint estimates for homogeneous littlewood paley g functions with non doubling measures
url http://dx.doi.org/10.1155/2009/284849
work_keys_str_mv AT dachunyang endpointestimatesforhomogeneouslittlewoodpaleygfunctionswithnondoublingmeasures
AT dongyongyang endpointestimatesforhomogeneouslittlewoodpaleygfunctionswithnondoublingmeasures