Bounds on oscillatory integral operators based on multilinear estimates

Details Bounds on oscillatory integral operators based on multilinear estimates Bounds on oscillatory integral operators based on multilinear estimates

2010-12-16

arxiv.org/abs/1012.3760v3

Mathematics

Classical Analysis and ODEs

69 pages, 7 figures. Improved following suggestions from the referee: slightly sharper results and more references. To be publ

Scientific paper

We apply the Bennett-Carbery-Tao multilinear restriction estimate in order to bound restriction operators and more general oscillatory integral operators. We get improved L^p estimates in the Stein restriction problem for dimension at least 5 and a small improvement in dimension 3. We prove similar estimates for Hormander-type oscillatory integral operators when the quadratic term in the phase function is positive definite, getting improvements in dimension at least 5. We also prove estimates for Hormander-type oscillatory integral operators in even dimensions. These last oscillatory estimates are related to improved bounds on the dimensions of curved Kakeya sets in even dimensions.

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