Subconvex $L^p$-sets, Weyl's inequality, and equidistribution

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Main Author: Wooley, Trevor D.
Format: Preprint
Published: 2025
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author Wooley, Trevor D.
author_facet Wooley, Trevor D.
contents We examine sets $\mathscr A$ of natural numbers having the property that for some real number $p\in (0,2)$, one has the subconvex bound $$\int_0^1 \Bigl| \sum_{n\in \mathscr A\cap [1,N]}e(nα)\Bigr|^p\, {\rm d}α\ll N^{-1}|\mathscr A\cap [1,N]|^p.$$ We show that exponential sums over such sets satisfy inequalities analogous to Weyl's inequality, and in many circumstances of the same strength as classical versions of Weyl's bound. We also examine equidistribution of polynomials modulo $1$ in which the summands are restricted to these subconvex $L^p$-sets. In addition, we describe applications to problems involving character sums and averages of arithmetic functions.
format Preprint
id arxiv_https___arxiv_org_abs_2508_13384
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Subconvex $L^p$-sets, Weyl's inequality, and equidistribution
Wooley, Trevor D.
Number Theory
11L07, 11L15, 11J71, 11P55, 42A32
We examine sets $\mathscr A$ of natural numbers having the property that for some real number $p\in (0,2)$, one has the subconvex bound $$\int_0^1 \Bigl| \sum_{n\in \mathscr A\cap [1,N]}e(nα)\Bigr|^p\, {\rm d}α\ll N^{-1}|\mathscr A\cap [1,N]|^p.$$ We show that exponential sums over such sets satisfy inequalities analogous to Weyl's inequality, and in many circumstances of the same strength as classical versions of Weyl's bound. We also examine equidistribution of polynomials modulo $1$ in which the summands are restricted to these subconvex $L^p$-sets. In addition, we describe applications to problems involving character sums and averages of arithmetic functions.
title Subconvex $L^p$-sets, Weyl's inequality, and equidistribution
topic Number Theory
11L07, 11L15, 11J71, 11P55, 42A32
url https://arxiv.org/abs/2508.13384