{ "id": "1702.07650", "version": "v1", "published": "2017-02-24T16:30:55.000Z", "updated": "2017-02-24T16:30:55.000Z", "title": "Lower Bounds for Maximum Gap in (Inverse) Cyclotomic Polynomials", "authors": [ "Mary Ambrosino", "Hoon Hong", "Eunjeong Lee" ], "categories": [ "math.NT" ], "abstract": "The maximum gap $g(f)$ of a polynomial $f$ is the maximum of the differences (gaps) between two consecutive exponents that appear in $f$. Let $\\Phi_{n}$ and $\\Psi_{n}$ denote the $n$-th cyclotomic and $n$-th inverse cyclotomic polynomial, respectively. In this paper, we give several lower bounds for $g(\\Phi_{n})$ and $g(\\Psi_{n})$, where $n$ is the product of odd primes. We observe that they are very often exact. We also give an exact expression for $g(\\Psi_{n})$ under a certain condition. Finally we conjecture an exact expression for $g(\\Phi_{n})$ under a certain condition.", "revisions": [ { "version": "v1", "updated": "2017-02-24T16:30:55.000Z" } ], "analyses": { "keywords": [ "lower bounds", "maximum gap", "exact expression", "th inverse cyclotomic polynomial", "th cyclotomic" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }