Sharp L⁴ restriction estimates for surfaces of codimension two in R⁵

2026/07/17 by Jennifer Duncan, Ana Vargas
#math.CA

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Abstract

We prove L^p→ L⁴ Fourier adjoint restriction estimates for three-dimensional quadratic surfaces in ℝ⁵. These estimates are sharp up to the endpoint, and improve results by Oberlin and Guo--Oh.

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