{ "id": "1203.0132", "version": "v1", "published": "2012-03-01T10:18:47.000Z", "updated": "2012-03-01T10:18:47.000Z", "title": "Largest sparse subgraphs of random graphs", "authors": [ "Nikolaos Fountoulakis", "Ross J. Kang", "Colin McDiarmid" ], "comment": "15 pages", "journal": "Eur. J. Comb. 35 (2014), 232-244", "doi": "10.1016/j.ejc.2013.06.012", "categories": [ "math.CO", "math.PR" ], "abstract": "For the Erd\\H{o}s-R\\'enyi random graph G(n,p), we give a precise asymptotic formula for the size of a largest vertex subset in G(n,p) that induces a subgraph with average degree at most t, provided that p = p(n) is not too small and t = t(n) is not too large. In the case of fixed t and p, we find that this value is asymptotically almost surely concentrated on at most two explicitly given points. This generalises a result on the independence number of random graphs. For both the upper and lower bounds, we rely on large deviations inequalities for the binomial distribution.", "revisions": [ { "version": "v1", "updated": "2012-03-01T10:18:47.000Z" } ], "analyses": { "subjects": [ "05C80", "05A16" ], "keywords": [ "random graph", "largest sparse subgraphs", "largest vertex subset", "large deviations inequalities", "precise asymptotic formula" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012arXiv1203.0132F" } } }