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arXiv · 2607.16113

Sharp L^4 restriction estimates for surfaces of codimension two in R^5

Jennifer Duncan·Ana Vargas
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Abstract

We prove $L^p\rightarrow L^4$ Fourier adjoint restriction estimates for three-dimensional quadratic surfaces in $\mathbb{R}^5$. These estimates are sharp up to the endpoint, and improve results by Oberlin and Guo--Oh.

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Jennifer Duncan, Ana Vargas. 2026-07-17. Sharp L^4 restriction estimates for surfaces of codimension two in R^5. https://arxiv.org/abs/2607.16113

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