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Atomic representations of Cuntz algebras
Journal article   Open access   Peer reviewed

Atomic representations of Cuntz algebras

Dorin Ervin Dutkay, John Haussermann and Palle E.T Jorgensen
Journal of mathematical analysis and applications, Vol.421(1), pp.215-243
01/01/2015
DOI: 10.1016/j.jmaa.2014.07.005
url
https://doi.org/10.1016/j.jmaa.2014.07.005View
Published (Version of record) Open Access

Abstract

To a representation of ON (the Cuntz algebra with N generators) we associate a projection valued measure and we study the case when this measure has atoms. The main technical tool are the spaces invariant for all the operators Si⁎. We classify the purely atomic representations and find when such representations are permutative. Applications include: wavelet representations, representations generated by finitely correlated states, representation associated to Hadamard triples (or fractal spectral measures) and representations associated to generalized Walsh bases.
Iterated function system Wavelet Walsh bases Permutative representations Cuntz algebras Spectral measures

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