{ "id": "1810.01731", "version": "v1", "published": "2018-10-03T13:33:05.000Z", "updated": "2018-10-03T13:33:05.000Z", "title": "Judiciously 3-partitioning 3-uniform hypergraphs", "authors": [ "Hunter Spink", "Marius Tiba" ], "comment": "18 pages, comments welcome!", "categories": [ "math.CO" ], "abstract": "Bollob\\'as, Reed and Thomason proved every $3$-uniform hypergraph $\\mathcal{H}$ with $m$ edges has a vertex-partition $V(\\mathcal{H})=V_1 \\sqcup V_2 \\sqcup V_3$ such that each part meets at least $\\frac{1}{3}(1-\\frac{1}{e})m$ edges, later improved to $0.6m$ by Halsegrave and improved asymptotically to $0.65m+o(m)$ by Ma and Yu. We improve this asymptotic bound to $\\frac{19}{27}m+o(m)$, which is best possible up to the error term, resolving a special case of a conjecture of Bollob\\'as and Scott.", "revisions": [ { "version": "v1", "updated": "2018-10-03T13:33:05.000Z" } ], "analyses": { "subjects": [ "05C65" ], "keywords": [ "uniform hypergraph", "part meets", "asymptotic bound", "error term", "special case" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable" } } }