4.1 Article

BOUNDEDNESS OF SINGULAR INTEGRALS IN HARDY SPACES ON SPACES OF HOMOGENEOUS TYPE

Journal

TAIWANESE JOURNAL OF MATHEMATICS
Volume 13, Issue 1, Pages 91-135

Publisher

MATHEMATICAL SOC REP CHINA
DOI: 10.11650/twjm/1500405274

Keywords

Hardy space; Atom; Molecule; Space of homogeneous type; BMO; Lipschitz space; Singular integral; Monge-Ampere singular integral; Variable kernel; Unbounded model domains of polynomial type; Matrix dilation

Categories

Funding

  1. National Natural Science Foundation of China [10671210]
  2. National Science Foundation for Distinguished Young Scholars [10425106]
  3. NCET [04-0142]

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The authors first give a detailed proof on the coincidence between atomic Hardy spaces of Coifman and Weiss on a space of homogeneous type with those Hardy spaces on the same underlying space with the original distance replaced by the measure distance. Then the authors present some general criteria which guarantee the boundedness of considered linear operators from a Hardy space to some Lebesgue space or Hardy space, provided that it maps all atoms into uniformly bounded elements of that Lebesgue space or Hardy space. Third, the authors obtain the boundedness in Hardy spaces of singular integrals with kernels only having weak regularity by characterizing these Hardy spaces with a new kind of molecules, which is deeply related to the kernels of considered singular integrals. Finally, as an application, the authors obtain the boundedness in Hardy spaces of Monge-Ampere singular integral operators.

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