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arXiv · 2610.01567

Strip Decoupling Inequalities for the Paraboloid in $\mathbb{R}^3$

Jacob Glidewell
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Abstract

Large-cap or large-ensemble decoupling inequalities were initially studied by Demeter. These are intimately connected to the reverse square-function conjecture and restriction conjecture in Fourier restriction theory. By strips, we mean a partition of the $R^{-1}$-neighborhood of the paraboloid into $1\times R^{-1/2}\times R^{-1}$ curved large-caps. In this article, we prove the sharp $\ell^2(L^{10/3})$ decoupling estimate for strips in $\mathbb{R}^3$. We reduce the strip decoupling inequalities to a planar incidence problem, which is dealt with via two-ends Furstenberg incidence estimates. Our method is inspired by Wang--Wu on the restriction conjecture.

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Jacob Glidewell. 2026-10-01. Strip Decoupling Inequalities for the Paraboloid in $\mathbb{R}^3$. https://arxiv.org/abs/2610.01567

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