{ "id": "2310.12283", "version": "v1", "published": "2023-10-17T08:10:13.000Z", "updated": "2023-10-17T08:10:13.000Z", "title": "A characterization of 4-connected graphs with no $K_{3,3}+v$-minor", "authors": [ "Linsong Wei", "Yuqi Xu", "Yunxia Zhang", "Weihua Yang" ], "comment": "25", "categories": [ "math.CO" ], "abstract": "Among graphs with 13 edges, there are exactly three internally 4-connected graphs which are $Oct^{+}$, cube+e and $ K_{3,3} +v$. A complete characterization of all 4-connected graphs with no $Oct^{+}$-minor is given in [John Maharry, An excluded minor theorem for the octahedron plus an edge, Journal of Graph Theory 57(2) (2008) 124-130]. Let $K_{3,3}+v$ denote the graph obtained by adding a new vertex $v$ to $K_{3,3}$ and joining $v$ to the four vertices of a 4-cycle. In this paper, we determine all 4-connected graphs that do not contain $K_{3,3}+v$ as a minor.", "revisions": [ { "version": "v1", "updated": "2023-10-17T08:10:13.000Z" } ], "analyses": { "keywords": [ "complete characterization", "graph theory", "john maharry", "octahedron plus", "excluded minor theorem" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }