{ "id": "1006.0444", "version": "v2", "published": "2010-06-02T16:57:26.000Z", "updated": "2010-11-08T20:57:56.000Z", "title": "Two critical periods in the evolution of random planar graphs", "authors": [ "Mihyun Kang", "Tomasz Ɓuczak" ], "comment": "30 pages, 1 figure", "categories": [ "math.CO" ], "abstract": "Let $P(n,M)$ be a graph chosen uniformly at random from the family of all labeled planar graphs with $n$ vertices and $M$ edges. In the paper we study the component structure of $P(n,M)$. Combining counting arguments with analytic techniques, we show that there are two critical periods in the evolution of $P(n,M)$. The first one, of width $\\Theta(n^{2/3})$, is analogous to the phase transition observed in the standard random graph models and takes place for $M=n/2+O(n^{2/3})$, when the largest complex component is formed. Then, for $M=n+O(n^{3/5})$, when the complex components cover nearly all vertices, the second critical period of width $n^{3/5}$ occurs. Starting from that moment increasing of $M$ mostly affects the density of the complex components, not its size.", "revisions": [ { "version": "v2", "updated": "2010-11-08T20:57:56.000Z" } ], "analyses": { "subjects": [ "05C10", "05C80", "05C30", "05A16" ], "keywords": [ "random planar graphs", "critical period", "standard random graph models", "largest complex component", "complex components cover" ], "note": { "typesetting": "TeX", "pages": 30, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010arXiv1006.0444K" } } }