{ "id": "0909.2314", "version": "v1", "published": "2009-09-12T09:12:35.000Z", "updated": "2009-09-12T09:12:35.000Z", "title": "A new counting methods, including the issue of counting labelled self-complementary graphs", "authors": [ "Shinsei Tazawa" ], "comment": "13 pages", "categories": [ "math.CO", "math.GR" ], "abstract": "Harary and Palmer announced an enumeration problem of labelled self-complementary graphs at the end of their book (Graphical Enumeration, Academic Press, New York and London, 1973). This paper resolves this problem. A method for solving this problem leads to the derivation of following formulas: (a) A formula on the number of labelled graphs with the given order of automorphism groups of those graphs. (b) A formula on the number of unlabelled graphs with the given order of automorphism groups of those graphs. (c) A formula on the number of labelled self-complementary graphs with the given order of automorphism groups of those graphs. (d) A formula on the number of unlabelled self-complementary graphs with the given order of automorphism groups of those graphs.", "revisions": [ { "version": "v1", "updated": "2009-09-12T09:12:35.000Z" } ], "analyses": { "subjects": [ "05C25", "05C30" ], "keywords": [ "counting labelled self-complementary graphs", "automorphism groups", "counting methods", "academic press", "enumeration problem" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0909.2314T" } } }