The three-dimensional anisotropic Kakeya--Nikodym conjecture

Let n=3n=3, let Σ\Sigma be a strictly convex hypersurface, and let MKNE\mathop{\mathrm{MKNE}} denote the maximal Kakeya--Nikodym estimate referred to in the source as equation (MKNE). Three-dimensional anisotropic Kakeya--Nikodym conjecture. The estimate MKNE\mathop{\mathrm{MKNE}} should hold for every p3p\ge3.

The source explains that this conjecture would imply Stein's Fourier restriction conjecture in dimension three. Its status is not resolved in the supplied context.

Sources & referencesView supporting material

Primary source

Chuanwei Gao, Shukun Wu and Yakun Xi, “Sharp microlocal Kakeya–Nikodym estimates for eigenfunctions with applications”, arXiv:2509.01116 (2026).

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