{ "id": "1607.01456", "version": "v1", "published": "2016-07-06T01:57:08.000Z", "updated": "2016-07-06T01:57:08.000Z", "title": "Decomposing 8-regular graphs into paths of length 4", "authors": [ "Fábio Botler", "Alexandre Talon" ], "categories": [ "math.CO", "cs.DM" ], "abstract": "A $T$-decomposition of a graph $G$ is a set of edge-disjoint copies of $T$ in $G$ that cover the edge set of $G$. Graham and H\\\"aggkvist (1989) conjectured that any $2\\ell$-regular graph $G$ admits a $T$-decomposition if $T$ is a tree with $\\ell$ edges. Kouider and Lonc (1999) conjectured that, in the special case where $T$ is the path with $\\ell$ edges, $G$ admits a $T$-decomposition $\\mathcal{D}$ where every vertex of $G$ is the end-vertex of exactly two paths of $\\mathcal{D}$, and proved that this statement holds when $G$ has girth at least $(\\ell+3)/2$. In this paper we verify Kouider and Lonc's Conjecture for paths of length $4$.", "revisions": [ { "version": "v1", "updated": "2016-07-06T01:57:08.000Z" } ], "analyses": { "subjects": [ "05B40", "05C70", "05C51", "05C38" ], "keywords": [ "decomposition", "edge-disjoint copies", "statement holds", "decomposing", "edge set" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }