On the $j$-th smallest modulus of a covering system with distinct moduli
Number Theory
2023-08-25 v2 Combinatorics
Abstract
Covering systems were introduced by Erd\H{o}s in 1950. In the same article where he introduced them, he asked if the minimum modulus of a covering system with distinct moduli is bounded. In 2015, Hough answered affirmatively this long standing question. In 2022, Balister, Bollob\'as, Morris, Sahasrabudhe and Tiba gave a simpler and more versatile proof of Hough's result. Building upon their work, we show that there exists some absolute constant such that the -th smallest modulus of a minimal covering system with distinct moduli is .
Cite
@article{arxiv.2212.01299,
title = {On the $j$-th smallest modulus of a covering system with distinct moduli},
author = {Jonah Klein and Dimitris Koukoulopoulos and Simon Lemieux},
journal= {arXiv preprint arXiv:2212.01299},
year = {2023}
}
Comments
8 pages, minor corrections and changes. Final version, to appear in Int. J. Number Theory