{ "id": "0911.4582", "version": "v2", "published": "2009-11-24T17:15:43.000Z", "updated": "2010-02-01T15:54:08.000Z", "title": "Spherical means with centers on a hyperplane in even dimensions", "authors": [ "E K Narayanan", "Rakesh" ], "comment": "Revised version. Corrected some typing errors and added a figure", "categories": [ "math.AP" ], "abstract": "Given a real valued function on R^n we study the problem of recovering the function from its spherical means over spheres centered on a hyperplane. An old paper of Bukhgeim and Kardakov derived an inversion formula for the odd n case with great simplicity and economy. We apply their method to derive an inversion formula for the even n case. A feature of our inversion formula, for the even n case, is that it does not require the Fourier transform of the mean values or the use of the Hilbert transform, unlike the previously known inversion formulas for the even n case. Along the way, we extend the isometry identity of Bukhgeim and Kardakov for odd n, for solutions of the wave equation, to the even n case.", "revisions": [ { "version": "v2", "updated": "2010-02-01T15:54:08.000Z" } ], "analyses": { "subjects": [ "35L05", "35L15", "35R30", "44A05", "44A12", "92C55" ], "keywords": [ "spherical means", "inversion formula", "hyperplane", "dimensions", "fourier transform" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2009arXiv0911.4582N" } } }