{ "id": "math/0602426", "version": "v1", "published": "2006-02-20T13:08:14.000Z", "updated": "2006-02-20T13:08:14.000Z", "title": "Optimal domain for the Hardy operator", "authors": [ "Olvido Delgado", "Javier Soria" ], "comment": "15 pages", "categories": [ "math.FA", "math.CA" ], "abstract": "We study the optimal domain for the Hardy operator considered with values in a rearrangement invariant space. In particular, this domain can be represented as the space of integrable functions with respect to a vector measure defined on a $\\delta$-ring. A precise description is given for the case of the minimal Lorentz spaces.", "revisions": [ { "version": "v1", "updated": "2006-02-20T13:08:14.000Z" } ], "analyses": { "subjects": [ "46E30", "46B25" ], "keywords": [ "hardy operator", "optimal domain", "minimal lorentz spaces", "rearrangement invariant space", "precise description" ], "note": { "typesetting": "TeX", "pages": 15, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2006math......2426D" } } }