{ "id": "1503.06912", "version": "v1", "published": "2015-03-24T04:52:03.000Z", "updated": "2015-03-24T04:52:03.000Z", "title": "Hadwiger's conjecture for the complements of Kneser graphs", "authors": [ "Guangjun Xu", "Sanming Zhou" ], "categories": [ "math.CO" ], "abstract": "Hadwiger's conjecture asserts that every graph with chromatic number $t$ contains a complete minor of order $t$. Given integers $n \\ge 2k+1 \\ge 5$, the Kneser graph $K(n, k)$ is the graph with vertices the $k$-subsets of an $n$-set such that two vertices are adjacent if and only if the corresponding $k$-subsets are disjoint. We prove that Hadwiger's conjecture is true for the complements of Kneser graphs.", "revisions": [ { "version": "v1", "updated": "2015-03-24T04:52:03.000Z" } ], "analyses": { "subjects": [ "05C15", "05C83" ], "keywords": [ "kneser graph", "complements", "hadwigers conjecture asserts", "chromatic number", "complete minor" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv150306912X" } } }