{ "id": "1703.08768", "version": "v1", "published": "2017-03-26T05:31:13.000Z", "updated": "2017-03-26T05:31:13.000Z", "title": "$R(5,5) \\le 48$", "authors": [ "Vigleik Angeltveit", "Brendan D. McKay" ], "comment": "8 pages", "categories": [ "math.CO" ], "abstract": "We improve the upper bound on the Ramsey number $R(5,5)$ from $R(5,5) \\le 49$ to $R(5,5) \\le 48$. We also complete the catalogue of extremal graphs for $R(4,5)$.", "revisions": [ { "version": "v1", "updated": "2017-03-26T05:31:13.000Z" } ], "analyses": { "subjects": [ "05D10" ], "keywords": [ "ramsey number", "upper bound", "extremal graphs" ], "note": { "typesetting": "TeX", "pages": 8, "language": "en", "license": "arXiv", "status": "editable" } } }