{ "id": "math/0609802", "version": "v1", "published": "2006-09-28T13:13:43.000Z", "updated": "2006-09-28T13:13:43.000Z", "title": "The probability that a random multigraph is simple", "authors": [ "Svante Janson" ], "comment": "24 pages", "categories": [ "math.CO", "math.PR" ], "abstract": "Consider a random multigraph G* with given vertex degrees d_1,...,d_n, contructed by the configuration model. We show that, asymptotically for a sequence of such multigraphs with the number of edges (d_1+...+d_n)/2 tending to infinity, the probability that the multigraph is simple stays away from 0 if and only if \\sum d_i^2=O(\\sum d_i). This was previously known only under extra assumtions on the maximum degree. We also give an asymptotic formula for this probability, extending previous results by several authors.", "revisions": [ { "version": "v1", "updated": "2006-09-28T13:13:43.000Z" } ], "analyses": { "subjects": [ "05C80", "05C30", "60C05" ], "keywords": [ "random multigraph", "probability", "simple stays away", "vertex degrees", "configuration model" ], "note": { "typesetting": "TeX", "pages": 24, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......9802J" } } }