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HILBERT TRANSFORMS ALONG LIPSCHITZ DIRECTION FIELDS: A LACUNARY MODEL

Published online by Cambridge University Press:  09 February 2017

Shaoming Guo
Affiliation:
Institute of Mathematics, University of Bonn, Endenicher Allee 60, 53115, Bonn, Germany email [email protected] Department of Mathematics, Indiana University, 831 E Third St, Bloomington, IN 47405, U.S.A.
Christoph Thiele
Affiliation:
Institute of Mathematics, University of Bonn, Endenicher Allee 60, 53115, Bonn, Germany email [email protected]
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Abstract

We prove bounds for the truncated directional Hilbert transform in $L^{p}(\mathbb{R}^{2})$ for any $1<p<\infty$ under a combination of a Lipschitz assumption and a lacunarity assumption. It is known that a lacunarity assumption alone is not sufficient to yield boundedness for $p=2$, and it is a major question in the field whether a Lipschitz assumption alone suffices, at least for some $p$.

Type
Research Article
Copyright
Copyright © University College London 2017 

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