Variance of square-full integers in short intervals and arithmetic progressions

Fuente: arXiv
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Main Authors: Meemark, Yotsanan, Wongcharoenbhorn, Watcharakiete
Format: Preprint
Published: 2025
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author Meemark, Yotsanan
Wongcharoenbhorn, Watcharakiete
author_facet Meemark, Yotsanan
Wongcharoenbhorn, Watcharakiete
contents Define a natural number $n$ as a \textit{square-full} integer if for every prime $p$ such that $p|n$, we have $p^2|n$. In this paper, we establish an upper bound on the variance of square-full integers in short intervals of an expected order, under the assumption of a certain quasi-Riemann hypothesis. We also prove an asymptotic formula for the variance in arithmetic progressions, averaging over a quadratic residue and a nonresidue by a half, which is of smaller order of magnitude than the aforementioned bound for all primes $q\gg x^{51/114+\varepsilon}$.
format Preprint
id arxiv_https___arxiv_org_abs_2504_14511
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Variance of square-full integers in short intervals and arithmetic progressions
Meemark, Yotsanan
Wongcharoenbhorn, Watcharakiete
Number Theory
Define a natural number $n$ as a \textit{square-full} integer if for every prime $p$ such that $p|n$, we have $p^2|n$. In this paper, we establish an upper bound on the variance of square-full integers in short intervals of an expected order, under the assumption of a certain quasi-Riemann hypothesis. We also prove an asymptotic formula for the variance in arithmetic progressions, averaging over a quadratic residue and a nonresidue by a half, which is of smaller order of magnitude than the aforementioned bound for all primes $q\gg x^{51/114+\varepsilon}$.
title Variance of square-full integers in short intervals and arithmetic progressions
topic Number Theory
url https://arxiv.org/abs/2504.14511