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arXiv · 2605.15067

On Vu's restricted box estimate in Waring's problem

Christian Táfula
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Abstract

In 2000, Vu proved that the number of solutions of $x_1^k + \cdots + x_s^k = N$ in an arbitrary box satisfies the expected Hardy--Littlewood upper bound with a power-saving error term, for $s \geq O(8^k k^3)$. We show that one may take $s\geq k^2 - k + O(\sqrt{k})$.

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Christian Táfula. 2026-05-14. On Vu's restricted box estimate in Waring's problem. https://arxiv.org/abs/2605.15067

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