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Transactions of the American Mathematical Society

ISSN 1088-6850(online) ISSN 0002-9947(print)



Wiener's lemma for infinite matrices

Author: Qiyu Sun
Journal: Trans. Amer. Math. Soc. 359 (2007), 3099-3123
MSC (2000): Primary 42C40, 41A65, 41A15
Published electronically: January 26, 2007
MathSciNet review: 2299448
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Abstract: The classical Wiener lemma and its various generalizations are important and have numerous applications in numerical analysis, wavelet theory, frame theory, and sampling theory. There are many different equivalent formulations for the classical Wiener lemma, with an equivalent formulation suitable for our generalization involving commutative algebra of infinite matrices $ {\mathcal W}:=\{(a(j-j'))_{j,j'\in\mathbf{Z}^d}: \sum_{j\in \mathbf{Z}^d} \vert a(j)\vert<\infty\}$. In the study of spline approximation, (diffusion) wavelets and affine frames, Gabor frames on non-uniform grid, and non-uniform sampling and reconstruction, the associated algebras of infinite matrices are extremely non-commutative, but we expect those non-commutative algebras to have a similar property to Wiener's lemma for the commutative algebra $ {\mathcal W}$. In this paper, we consider two non-commutative algebras of infinite matrices, the Schur class and the Sjöstrand class, and establish Wiener's lemmas for those matrix algebras.

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Qiyu Sun
Affiliation: Department of Mathematics, University of Central Florida, Orlando, Florida 32816

Keywords: Wiener's lemma, Banach algebra, inverse of infinite matrices
Received by editor(s): April 15, 2005
Published electronically: January 26, 2007
Article copyright: © Copyright 2007 American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication.

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