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arXiv · 1012.3362

Spectral Invariance of Besov-Bessel Subalgebras

Andreas Klotz
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Abstract

Using principles of the theory of smoothness spaces we give systematic constructions of scales of inverse-closed subalgebras of a given Banach algebra with the action of a d-parameter automorphism group. In particular we obtain the inverse-closedness of Besov algebras, Bessel potential algebras and approximation algebras of polynomial order in their defining algebra. By a proper choice of the group action these general results can be applied to algebras of infinite matrices and yield inverse-closed subalgebras of matrices with off-diagonal decay of polynomial order. Besides alternative proofs of known results we obtain new classes of inverse-closed subalgebras of matrices with off-diagonal decay .

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Andreas Klotz. 2010-12-15. Spectral Invariance of Besov-Bessel Subalgebras. https://arxiv.org/abs/1012.3362

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