{ "id": "1012.5792", "version": "v1", "published": "2010-12-28T16:58:01.000Z", "updated": "2010-12-28T16:58:01.000Z", "title": "Subdivisions in apex graphs", "authors": [ "Elad Aigner-Horev" ], "comment": "30 pages, 3 figures, submitted on June 26th 2010", "categories": [ "math.CO" ], "abstract": "The Kelmans-Seymour conjecture states that the 5-connected nonplanar graphs contain a subdivided $K_{_5}$. Certain questions of Mader propose a \"plan\" towards a possible resolution of this conjecture. One part of this plan is to show that a 5-connected nonplanar graph containing $K^-_{_4}$ or $K_{_{2,3}}$ as a subgraph has a subdivided $K_{_5}$. Recently, Ma and Yu showed that a 5-connected nonplanar graph containing $K^-_{_4}$ as a subgraph has a subdivided $K_{_5}$. We take interest in $K_{_{2,3}}$ and prove that a 5-connected nonplanar apex graph containing $K_{_{2,3}}$ as a subgraph has a subdivided $K_{_5}$", "revisions": [ { "version": "v1", "updated": "2010-12-28T16:58:01.000Z" } ], "analyses": { "keywords": [ "subdivisions", "nonplanar graph containing", "nonplanar graphs contain", "kelmans-seymour conjecture states", "nonplanar apex graph containing" ], "note": { "typesetting": "TeX", "pages": 30, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1012.5792A" } } }