{ "id": "1010.2516", "version": "v2", "published": "2010-10-12T20:49:48.000Z", "updated": "2011-05-25T22:08:46.000Z", "title": "Asymptotic enumeration of sparse 2-connected graphs", "authors": [ "Graeme Kemkes", "Cristiane M. Sato", "Nicholas Wormald" ], "categories": [ "math.CO" ], "abstract": "We determine an asymptotic formula for the number of labelled 2-connected (simple) graphs on $n$ vertices and $m$ edges, provided that $m-n\\to\\infty$ and $m=O(n\\log n)$ as $n\\to\\infty$. This is the entire range of $m$ not covered by previous results. The proof involves determining properties of the core and kernel of random graphs with minimum degree at least 2. The case of 2-edge-connectedness is treated similarly. We also obtain formulae for the number of 2-connected graphs with given degree sequence for most (`typical') sequences. Our main result solves a problem of Wright from 1983.", "revisions": [ { "version": "v2", "updated": "2011-05-25T22:08:46.000Z" } ], "analyses": { "keywords": [ "asymptotic enumeration", "entire range", "asymptotic formula", "minimum degree", "degree sequence" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1010.2516K" } } }