{ "id": "1907.10828", "version": "v1", "published": "2019-07-25T04:00:01.000Z", "updated": "2019-07-25T04:00:01.000Z", "title": "Short presentations of finite simple groups", "authors": [ "Peter Huxford" ], "comment": "26 pages, 0 figures", "categories": [ "math.GR" ], "abstract": "Guralnick, Kantor, Kassabov and Lubotzky (J. Eur. Math. Soc. 13.2, 2011, 391-458) [GKKL] give 3-generator 7-relator presentations of $A_n$ and $S_n$ with bit-length $O(\\log n)$ for $n\\geq5$. This is the best possible bit-length, since $\\Omega(\\log n)$ bits are required to specify the integer $n$ in the input. However, the generators do not satisfy the relations. This paper considers the relevant arguments given in [GKKL], identifies where the errors occur, and shows how they can be fixed in order to recover this result. The presentations are available in Magma.", "revisions": [ { "version": "v1", "updated": "2019-07-25T04:00:01.000Z" } ], "analyses": { "subjects": [ "20F05", "20D06" ], "keywords": [ "finite simple groups", "short presentations", "bit-length", "relevant arguments", "errors occur" ], "note": { "typesetting": "TeX", "pages": 26, "language": "en", "license": "arXiv", "status": "editable" } } }