WEAK HARDY SPACES $H^{p,\infty}$ ON SPACES OF HOMOGENEOUS TYPE AND THEIR APPLICATIONS

Abstract

In this paper, we introduce weak Hardy spaces $H^{p,\infty}$ on spaces of homogeneous type. We establish an atomic decomposition characterization of these spaces, show the boundedness of fractional integral operators and provide an $H^{p,\infty}$ interpolation theorem. Applications to the Nagel-Stein's singular integral operators and fractional integral operators are also discussed.