# Additive Correlation and the Inverse Problem for the Large Sieve

@article{Hanson2017AdditiveCA,
title={Additive Correlation and the Inverse Problem for the Large Sieve},
author={B. Hanson},
journal={arXiv: Number Theory},
year={2017},
pages={1-7}
}
• B. Hanson
• Published 2017
• Mathematics
• arXiv: Number Theory
• Let $A\subset [1,N]$ be a set of positive integers with $|A|\gg \sqrt N$. We show that if avoids about $p/2$ residue classes modulo $p$ for each prime $p$, the $A$ must correlate additively with the squares $S=\{n^2:1\leq n\leq \sqrt N\}$, in the sense that we have the additive energy estimate $E(A,S)\gg N\log N$. This is, in a sense, optimal.

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