{ "id": "2212.05840", "version": "v1", "published": "2022-12-12T11:57:12.000Z", "updated": "2022-12-12T11:57:12.000Z", "title": "Discriminant and integral basis of pure nonic fields", "authors": [ "Anuj Jakhar", "Neeraj Sangwan" ], "categories": [ "math.NT" ], "abstract": "Let $K = \\Q(\\theta)$ be an algebraic number field with $\\theta$ satisfying an irreducible polynomial $x^{9} - a$ over the field $\\Q$ of rationals and $\\Z_K$ denote the ring of algebraic integers of $K$. In this article, we provide the exact power of each prime which divides the index of the subgroup $\\Z[\\theta]$ in $\\Z_K$. Further, we give a $p$-integral basis of $K$ for each prime $p$. These $p$-integral bases lead to a construction of an integral basis of $K$ which is illustrated with examples.", "revisions": [ { "version": "v1", "updated": "2022-12-12T11:57:12.000Z" } ], "analyses": { "keywords": [ "integral basis", "pure nonic fields", "discriminant", "algebraic number field", "algebraic integers" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }