{ "id": "1304.0702", "version": "v2", "published": "2013-04-02T17:20:55.000Z", "updated": "2014-03-27T10:04:59.000Z", "title": "The Riesz transform for the harmonic oscillator in spherical coordinates", "authors": [ "Ó. Ciaurri", "L. Roncal" ], "comment": "19 pages. To appear in Constructive Approximation", "categories": [ "math.CA", "math.FA" ], "abstract": "In this paper we show weighted estimates in mixed norm spaces for the Riesz transform associated with the harmonic oscillator in spherical coordinates. In order to prove the result we need a weighted inequality for a vector-valued extension of the Riesz transform related to the Laguerre expansions which is of independent interest. The main tools to obtain such extension are a weighted inequality for the Riesz transform independent of the order of the involved Laguerre functions and an appropriate adaptation of Rubio de Francia's extrapolation theorem.", "revisions": [ { "version": "v2", "updated": "2014-03-27T10:04:59.000Z" } ], "analyses": { "keywords": [ "harmonic oscillator", "spherical coordinates", "francias extrapolation theorem", "riesz transform independent", "weighted inequality" ], "note": { "typesetting": "TeX", "pages": 19, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2013arXiv1304.0702C" } } }