{ "id": "1512.01377", "version": "v1", "published": "2015-12-04T11:44:03.000Z", "updated": "2015-12-04T11:44:03.000Z", "title": "On connected simple graphs and their degree sequences", "authors": [ "Jonathan McLaughlin" ], "comment": "9 pages, 5 figures", "categories": [ "math.CO" ], "abstract": "This note describes necessary and sufficient conditions for a sequence of positive integers to be the degree sequence of a connected simple graph. Conditions are also given under which a sequence is necessarily connected i.e. the sequence can only be realised as a connected graph. A matrix is introduced whose non-empty entries partition the set of connected graphs. The note concludes with a result relating the number of edges in a simple graph to the connectedness of the graph.", "revisions": [ { "version": "v1", "updated": "2015-12-04T11:44:03.000Z" } ], "analyses": { "subjects": [ "05C40" ], "keywords": [ "connected simple graph", "degree sequence", "connected graph", "non-empty entries partition", "sufficient conditions" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2015arXiv151201377M" } } }