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Regularity of maximal functions on Hardy-Sobolev spaces
classification
math.CA
keywords
hardy-sobolevspacesexponentsmathbbmaximalrangeassociatedbounded
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We prove that maximal operators of convolution type associated to smooth kernels are bounded in the homogeneous Hardy-Sobolev spaces $\dot{H}^{1,p}(\mathbb{R}^d)$ when $1/p < 1+1/d$. This range of exponents is sharp. As a by-product of the proof, we obtain similar results for the local Hardy-Sobolev spaces $\dot{h}^{1,p}(\mathbb{R}^d)$ in the same range of exponents.
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