{ "id": "1707.03725", "version": "v1", "published": "2017-07-12T14:02:36.000Z", "updated": "2017-07-12T14:02:36.000Z", "title": "On the expected diameter of planar Brownian motion", "authors": [ "James McRedmond", "Chang Xu" ], "comment": "5 pages", "categories": [ "math.PR" ], "abstract": "Known results show that the diameter $d_1$ of the trace of planar Brownian motion run for unit time satisfies $1.595 \\leq \\mathbb{E} d_1 \\leq 2.507$. This note improves these bounds to $1.601 \\leq \\mathbb{E} d_1 \\leq 2.355$. Simulations suggest that $\\mathbb{E} d_1 \\approx 1.99$.", "revisions": [ { "version": "v1", "updated": "2017-07-12T14:02:36.000Z" } ], "analyses": { "subjects": [ "60J65", "60D05" ], "keywords": [ "expected diameter", "planar brownian motion run", "unit time satisfies", "simulations" ], "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }