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A restriction estimate in $\mathbb{R}^3$ using brooms

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arxiv 1802.04312 v2 pith:FBY2BA34 submitted 2018-02-12 math.CA

classification math.CA
keywords mathbbargumentbroomscombinescorrespondingendsestimateextension
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abstract

If $f$ is a function supported on the truncated paraboloid in $\mathbb{R}^3$ and $E$ is the corresponding extension operator, then we prove that for all $p> 3+ 3/13$, $\|Ef\|_{L^p(\mathbb{R}^3)}\leq C \|f\|_{L^{\infty}}$. The proof combines Wolff's two ends argument with polynomial partitioning techniques. We also observe some geometric structures in wave packets.

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  1. Improved bounds for the Kakeya maximal conjecture in higher dimensions

    math.CA 2019-08 conditional novelty 7.0 of 10

    New multiscale polynomial Wolff axioms lead to Kakeya maximal estimates for p ≥ 1 + O(1/n), improving prior bounds in dimensions n=5 and n≥7.

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