{ "id": "1012.3847", "version": "v3", "published": "2010-12-17T10:56:33.000Z", "updated": "2011-06-07T18:05:15.000Z", "title": "Chromatic polynomials of complementary (n,k)-clique pairs", "authors": [ "Adam Bohn" ], "comment": "Replaced by a longer version, containing this note as a subsection", "categories": [ "math.CO" ], "abstract": "We introduce a class of pairs of graphs consisting of two cliques joined by an arbitrary number of edges. The members of a pair have the property that the clique-bridging edge-set of one graph is the complement of that of the other. We prove a precise relation between the chromatic polynomials of the graphs in such a pair, showing that they have the same splitting field, and that the number of acyclic orientations of each graph is determined by the number of proper vertex-colourings of the other.", "revisions": [ { "version": "v3", "updated": "2011-06-07T18:05:15.000Z" } ], "analyses": { "keywords": [ "chromatic polynomials", "complementary", "arbitrary number", "precise relation", "acyclic orientations" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1012.3847B" } } }