{ "id": "2007.12503", "version": "v1", "published": "2020-07-24T12:42:29.000Z", "updated": "2020-07-24T12:42:29.000Z", "title": "Toward a Classification of the Supercharacter Theories of $C_p\\times C_p$", "authors": [ "Shawn T. Burkett", "Mark L. Lewis" ], "comment": "19 pages", "categories": [ "math.GR" ], "abstract": "In this paper, we study the superscharacter theories of elementary abelian $p$-groups of order $p^2$. We show that the supercharacter theories that arise from the direct product construction and the $\\ast$-product construction can be obtained from automorphisms. We also prove that any supercharacter theory of an elementary abelian $p$-group of order $p^2$ that has a nonidentity superclass of size $1$ or a nonprincipal linear supercharacter must come from either a $\\ast$-product or a direct product. Although we are unable to prove results for general primes, we do compute all of the supercharacter theories when $p = 2, 3, 5$, and based on these computations along with particular computations for larger primes, we make several conjectures for a general prime $p$.", "revisions": [ { "version": "v1", "updated": "2020-07-24T12:42:29.000Z" } ], "analyses": { "subjects": [ "20C15", "20D15" ], "keywords": [ "supercharacter theory", "classification", "general prime", "elementary abelian", "direct product construction" ], "note": { "typesetting": "TeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable" } } }