{ "id": "0805.4122", "version": "v1", "published": "2008-05-27T13:53:17.000Z", "updated": "2008-05-27T13:53:17.000Z", "title": "Boundedness of Fourier integral operators on Fourier Lebesgue spaces and affine fibrations", "authors": [ "Fabio Nicola" ], "comment": "13 pages", "categories": [ "math.FA", "math.AP" ], "abstract": "We carry on the study of Fourier integral operators of H{\\\"o}rmander's type acting on the spaces $(\\mathcal{F}L^p)_{comp}$, $1\\leq p\\leq\\infty$, of compactly supported distributions whose Fourier transform is in $L^p$. We show that the sharp loss of derivatives for such an operator to be bounded on these spaces is related to the rank $r$ of the Hessian of the phase $\\Phi(x,\\eta)$ with respect to the space variables $x$. Indeed, we show that operators of order $m=-r|1/2-1/p|$ are bounded on $(\\mathcal{F}L^p)_{comp}$, if the mapping $x\\longmapsto\\nabla_x\\Phi(x,\\eta)$ is constant on the fibers, of codimension $r$, of an affine fibration.", "revisions": [ { "version": "v1", "updated": "2008-05-27T13:53:17.000Z" } ], "analyses": { "subjects": [ "35S30", "42B35" ], "keywords": [ "fourier integral operators", "fourier lebesgue spaces", "affine fibration", "boundedness", "fourier transform" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2008arXiv0805.4122N" } } }