{ "id": "1411.1645", "version": "v1", "published": "2014-11-06T16:00:39.000Z", "updated": "2014-11-06T16:00:39.000Z", "title": "The resurgence properties of the Incomplete gamma function II", "authors": [ "Gergő Nemes" ], "comment": "22 pages, 3 figures", "categories": [ "math.CA" ], "abstract": "In this paper we derive a new representation for the incomplete gamma function, exploiting the reformulation of the method of steepest descents by C. J. Howls (Howls, Proc. R. Soc. Lond. A 439 (1992) 373--396). Using this representation, we obtain numerically computable bounds for the remainder term of the asymptotic expansion of the incomplete gamma function $\\Gamma \\left( { - a,\\lambda a} \\right)$ with large $a$ and fixed positive $\\lambda$, and an asymptotic expansion for its late coefficients. We also give a rigorous proof of Dingle's formal result regarding the exponentially improved version of the asymptotic series of $\\Gamma \\left( { - a,\\lambda a} \\right)$.", "revisions": [ { "version": "v1", "updated": "2014-11-06T16:00:39.000Z" } ], "analyses": { "subjects": [ "41A60", "33B20", "34M40" ], "keywords": [ "incomplete gamma function", "resurgence properties", "asymptotic expansion", "late coefficients", "representation" ], "note": { "typesetting": "TeX", "pages": 22, "language": "en", "license": "arXiv", "status": "editable" } } }