{ "id": "math/0503544", "version": "v1", "published": "2005-03-24T14:12:18.000Z", "updated": "2005-03-24T14:12:18.000Z", "title": "Continuum percolation with steps in an annulus", "authors": [ "Paul Balister", "Bela Bollobas", "Mark Walters" ], "comment": "Published at http://dx.doi.org/10.1214/105051604000000891 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)", "journal": "Annals of Applied Probability 2004, Vol. 14, No. 4, 1869-1879", "doi": "10.1214/105051604000000891", "categories": [ "math.PR" ], "abstract": "Let A be the annulus in R^2 centered at the origin with inner and outer radii r(1-\\epsilon) and r, respectively. Place points {x_i} in R^2 according to a Poisson process with intensity 1 and let G_A be the random graph with vertex set {x_i} and edges x_ix_j whenever x_i-x_j\\in A. We show that if the area of A is large, then G_A almost surely has an infinite component. Moreover, if we fix \\epsilon, increase r and let n_c=n_c(\\epsilon) be the area of A when this infinite component appears, then n_c\\to1 as \\epsilon \\to 0. This is in contrast to the case of a ``square'' annulus where we show that n_c is bounded away from 1.", "revisions": [ { "version": "v1", "updated": "2005-03-24T14:12:18.000Z" } ], "analyses": { "subjects": [ "60K35", "82B43" ], "keywords": [ "continuum percolation", "infinite component appears", "poisson process", "random graph", "place points" ], "tags": [ "journal article" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2005math......3544B" } } }