{ "id": "math/0508647", "version": "v1", "published": "2005-08-31T17:52:10.000Z", "updated": "2005-08-31T17:52:10.000Z", "title": "Hamiltonicity of Cubic Cayley Graphs", "authors": [ "Henry Glover", "Dragan Marusic" ], "comment": "13 pages, 6 figures", "categories": [ "math.CO", "math.GR" ], "abstract": "Following a problem posed by Lov\\'asz in 1969, it is believed that every connected vertex-transitive graph has a Hamilton path. This is shown here to be true for cubic Cayley graphs arising from groups having a $(2,s,3)$-presentation, that is, for groups $G=\\la a,b| a^2=1, b^s=1, (ab)^3=1, etc. \\ra$ generated by an involution $a$ and an element $b$ of order $s\\geq3$ such that their product $ab$ has order 3. More precisely, it is shown that the Cayley graph $X=Cay(G,\\{a,b,b^{-1}\\})$ has a Hamilton cycle when $|G|$ (and thus $s$) is congruent to 2 modulo 4, and has a long cycle missing only two vertices (and thus necessarily a Hamilton path) when $|G|$ is congruent to 0 modulo 4.", "revisions": [ { "version": "v1", "updated": "2005-08-31T17:52:10.000Z" } ], "analyses": { "subjects": [ "05C25", "20B25" ], "keywords": [ "hamilton path", "hamiltonicity", "cubic cayley graphs arising", "hamilton cycle", "long cycle" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2005math......8647G" } } }