{ "id": "1605.02456", "version": "v1", "published": "2016-05-09T07:45:24.000Z", "updated": "2016-05-09T07:45:24.000Z", "title": "On the structure of finitely generated shift-invariant subspaces", "authors": [ "K. S. Kazarian" ], "categories": [ "math.CA" ], "abstract": "A characterization of finitely generated shift-invariant subspaces is given when generators are g-minimal. An algorithm is given for the determination of the coefficients in the well known representation of the Fourier transform of an element of the finitely generated shift-invariant subspace as a linear combination of Fourier transformations of generators. An estimate for the norms of those coefficients is derived. For the proof a sort of orthogonalization procedure for generators is used which reminds the well known Gram-Schmidt orthogonalization process.", "revisions": [ { "version": "v1", "updated": "2016-05-09T07:45:24.000Z" } ], "analyses": { "subjects": [ "41A30", "41A63", "42C30" ], "keywords": [ "finitely generated shift-invariant subspace", "generators", "gram-schmidt orthogonalization process", "coefficients", "fourier transformations" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }