{ "id": "1809.01907", "version": "v1", "published": "2018-09-06T09:55:28.000Z", "updated": "2018-09-06T09:55:28.000Z", "title": "The sharp threshold for jigsaw percolation in random graphs", "authors": [ "Oliver Cooley", "Tobias Kapetanopoulos", "Tamás Makai" ], "comment": "22 pages", "categories": [ "math.CO" ], "abstract": "We analyse the jigsaw percolation process, which may be seen as a measure of whether two graphs on the same vertex set are `jointly connected'. Bollob\\'as, Riordan, Slivken and Smith proved that when the two graphs are independent binomial random graphs, whether the jigsaw process percolates undergoes a phase transition when the product of the two probabilities is $\\Theta\\left( \\frac{1}{n\\ln n} \\right)$. We show that this threshold is sharp, and that it lies at $\\frac{1}{4n\\ln n}$.", "revisions": [ { "version": "v1", "updated": "2018-09-06T09:55:28.000Z" } ], "analyses": { "subjects": [ "05C80", "60K35", "60C05" ], "keywords": [ "sharp threshold", "independent binomial random graphs", "jigsaw process percolates undergoes", "jigsaw percolation process", "vertex set" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }