{ "id": "1512.05261", "version": "v1", "published": "2015-12-16T17:48:29.000Z", "updated": "2015-12-16T17:48:29.000Z", "title": "Ramsey numbers for partially-ordered sets", "authors": [ "Christopher Cox", "Derrick Stolee" ], "comment": "18 pages, 3 figures, 1 table", "categories": [ "math.CO" ], "abstract": "We present a refinement of Ramsey numbers by considering graphs with a partial ordering on their vertices. This is a natural extension of the ordered Ramsey numbers. We formalize situations in which we can use arbitrary families of partially-ordered sets to form host graphs for Ramsey problems. We explore connections to well studied Tur\\'an-type problems in partially-ordered sets, particularly those in the Boolean lattice. We find a strong difference between Ramsey numbers on the Boolean lattice and ordered Ramsey numbers when the partial ordering on the graphs have large antichains.", "revisions": [ { "version": "v1", "updated": "2015-12-16T17:48:29.000Z" } ], "analyses": { "subjects": [ "05C55", "06A07" ], "keywords": [ "partially-ordered sets", "ordered ramsey numbers", "boolean lattice", "form host graphs", "arbitrary families" ], "note": { "typesetting": "TeX", "pages": 18, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv151205261C" } } }