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Title:
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On spectral approximation, Folner sequences and crossed products
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Author:
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Lledó, Fernando, 1967-
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Other authors:
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Centre de Recerca Matemàtica |
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Abstract:
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In this article we review first some of the possibilities in which the notions of Fo lner sequences and quasidiagonality have been applied to spectral approximation problems. We construct then a canonical Fo lner sequence for the crossed product of a concrete C* -algebra and a discrete amenable group. We apply our results to the rotation algebra (which contains interesting operators like almost Mathieu operators or periodic magnetic Schrödinger operators on graphs) and the C* -algebra generated by bounded Jacobi operators. |
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Publication date:
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2011 |
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Subject (UDC):
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517 - Anàlisi |
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Subject(s):
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Anàlisi espectral
Aproximació, Teoria de l'
C*-àlgebres |
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Rights:
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L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
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Pages:
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17 p. |
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Document type:
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Preprint |
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