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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(e) ISSN 0002-9939(p)

     

Perturbation theoretic entropy of the boundary actions of free groups


Author: Rui Okayasu
Journal: Proc. Amer. Math. Soc. 134 (2006), 1771-1776
MSC (2000): Primary 46L55; Secondary 28D20, 47B37
Posted: December 15, 2005
MathSciNet review: 2207492
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Abstract | References | Similar Articles | Additional Information

Abstract: We compute the exact value of Voiculescu's perturbation theoretic entropy of the boundary actions of free groups. This result is a partial answer of Voiculescu's question.


References

  • [BW] Bis, A.; Walczak, P. G. Entropies of hyperbolic groups and some foliated spaces. Foliations: geometry and dynamics (Warsaw, 2000), 197-211, World Sci. Publishing, River Edge, NJ, 2002. MR 1882770 (2002k:37038)
  • [CS] Connes, A.; Størmer, E. Entropy for automorphisms of $ II_1$ von Neumann algebras. Acta Math. 134 (1975), no. 3-4, 289-306. MR 0454657 (56:12906)
  • [DV] David, G.; Voiculescu, D. $ s$-numbers of singular integrals for the invariance of absolutely continuous spectra in fractional dimensions. J. Funct. Anal. 94 (1990), no. 1, 14-26. MR 1077543 (92f:47014)
  • [FTP] Figà -Talamanca, A.; Picardello, M. A. Spherical functions and harmonic analysis on free groups. J. Funct. Anal. 47 (1982), no. 3, 281-304. MR 0665019 (83m:22018)
  • [Mat] Matsumoto, K. On $ C^*$-algebras associated with subshifts. Internat. J. Math. 8 (1997), no. 3, 357-374. MR 1454478 (98h:46077)
  • [Oka1] Okayasu, R. Entropy of Subshifts and the Macaev Norm. J. Math. Soc. Japan 56 (2004), no. 1, 177-191. MR 2027621 (2004j:47137)
  • [Oka2] Okayasu, R. Gromov hyperbolic groups and the Macaev Norm. Preprint.
  • [Voi1] Voiculescu, D. Some results on norm-ideal perturbations of Hilbert space operators. J. Operator Theory 2 (1979), no. 1, 3-37. MR 0553861 (80m:47012)
  • [Voi2] Voiculescu, D. Some results on norm-ideal perturbations of Hilbert space operators. II. J. Operator Theory 5 (1981), no. 1, 77-100. MR 0613049 (83f:47014)
  • [Voi3] Voiculescu, D. On the existence of quasicentral approximate units relative to normed ideals. Part I. J. Funct. Anal. 91 (1990), no. 1, 1-36. MR 1054113 (91m:46089)
  • [Voi4] Voiculescu, D. Entropy of dynamical systems and perturbations of operators. Ergodic Theory Dynam. Systems 11 (1991), no. 4, 779-786. MR 1145622 (93b:46130)
  • [Voi5] Voiculescu, D. Entropy of dynamical systems and perturbations of operators. II. Houston J. Math. 17 (1991), no. 4, 651-661. MR 1147278 (93b:46131)
  • [Voi6] Voiculescu, D. Entropy-invariants of dynamical systems and perturbations of operators. Mathematical physics, X (Leipzig, 1991), 303-307, Springer, Berlin, 1992. MR 1386418

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Additional Information

Rui Okayasu
Affiliation: Department of Mathematics Education, Osaka Kyoiku University, Kashiwara, Osaka 582-8582, Japan
Email: rui@cc.osaka-kyoiku.ac.jp

DOI: http://dx.doi.org/10.1090/S0002-9939-05-08190-6
PII: S 0002-9939(05)08190-6
Keywords: Perturbation, entropy, Poisson boundary, free group
Received by editor(s): October 25, 2004
Received by editor(s) in revised form: January 25, 2005
Posted: December 15, 2005
Communicated by: David R. Larson
Article copyright: © Copyright 2005 American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.




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