{ "id": "1310.1587", "version": "v1", "published": "2013-10-06T14:08:31.000Z", "updated": "2013-10-06T14:08:31.000Z", "title": "The asymptotic behavior of the density of the supremum of Lévy processes", "authors": [ "Loïc Chaumont", "Jacek Malecki" ], "categories": [ "math.PR" ], "abstract": "Let us consider a real L\\'evy process X whose transition probabilities are absolutely continuous and have bounded densities. Then the law of the past supremum of X before any deterministic time t is absolutely continuous on (0,\\infty). We show that its density f_t(x) is continuous on (0,\\infty) if and only if the potential density h' of the upward ladder height process is continuous on (0,\\infty). Then we prove that f_t behaves at 0 as h'. We also describe the asymptotic behaviour of f_t, when t tends to infinity. Then some related results are obtained for the density of the meander and this of the entrance law of the L\\'evy process conditioned to stay positive.", "revisions": [ { "version": "v1", "updated": "2013-10-06T14:08:31.000Z" } ], "analyses": { "subjects": [ "60G51", "60J75" ], "keywords": [ "asymptotic behavior", "lévy processes", "real levy process", "upward ladder height process", "asymptotic behaviour" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1310.1587C" } } }