Skip to main content
Log in

Property (T) for topological groups and C*-algebras

  • Published:
Journal of Mathematical Sciences Aims and scope Submit manuscript

Abstract

The aim of the present (mostly expository) paper is to show the relationship of a generalization of Kazhdan’s property (T) for C*-algebras introduced in our recent paper to that of B. Bekka. It is shown that our definition coincides with Bekka’s definition for group C*-algebras of locally compact groups, whereas, in general, these definitions are distinct. Criteria for a C*-algebra to possess our property (T) are given. A number of examples of C*-algebras with and without property (T) are considered. Relations to K-theory are studied.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. M. B. Bekka, “Property (T) for C*-algebras,” Bull. London Math. Soc., 38, 857–867 (2006).

    Article  MATH  MathSciNet  Google Scholar 

  2. M. B. Bekka, P. de la Harpe, and A. Valette, Kazhdan’s Property (T), preprint.

  3. N. Brown, “Kazhdan’s property T and C*-algebras,” J. Funct. Anal., 240, 290–296 (2006).

    Article  MATH  MathSciNet  Google Scholar 

  4. A. Connes, “A factor of type II1 with countable fundamental group,” J. Operator Theory, 4, No. 1, 151–153 (1980).

    MATH  MathSciNet  Google Scholar 

  5. A. Connes and V. Jones, “Property T for von Neumann algebras,” Bull. London Math. Soc., 17, No. 1, 57–62 (1985).

    Article  MATH  MathSciNet  Google Scholar 

  6. J. Dauns and K. H. Hofmann, Representations of Rings by Continuous Sections, Mem. Amer. Math. Soc., Vol. 83, Amer. Math. Soc., Providence (1968).

    Google Scholar 

  7. J. Dixmier, “Points séparés dans le spectre d’une C*-algèbre,” Acta Sci. Math., 22, 115–128 (1961).

    MATH  MathSciNet  Google Scholar 

  8. J. Dixmier, C*-Algebras, North-Holland, Amsterdam (1982).

    Google Scholar 

  9. G. A. Elliott and D. Olesen, “A simple proof of the Dauns–Hofmann theorem,” Math. Scand., 34, 231–234 (1974).

    MATH  MathSciNet  Google Scholar 

  10. M. Frank, “Self-duality and C*-reflexivity of Hilbert C*-modules,” Z. Anal. Anwendungen, 9, 165–176 (1990).

    MathSciNet  Google Scholar 

  11. M. Frank, “Geometrical aspects of Hilbert C*-modules,” Positivity, 3, 215–243 (1999).

    Article  MATH  MathSciNet  Google Scholar 

  12. M. Frank, V. M. Manuilov, and E. V. Troitsky, “On conditional expectations arising from group actions,” Z. Anal. Anwendungen, 16, 831–850 (1997).

    MATH  MathSciNet  Google Scholar 

  13. U. Haagerup, “The standard form of von Neumann algebras,” Math. Scand., 37, No. 2, 271–283 (1975).

    MathSciNet  Google Scholar 

  14. P. R. Halmosh, Measure Theory, New York (1950).

  15. P. de la Harpe and A. Valette, La propriété (T) de Kazhdan pour les groupes localement compacts (avec un appendice de Marc Burger), Astérisque, Vol. 175, Soc. Math. France (1989).

    MATH  Google Scholar 

  16. A. Ya. Helemskii, Banach and Locally Convex Algebras, Clarendon Press (1993).

  17. G. G. Kasparov, “Hilbert C*-modules: Theorems of Stinespring and Voiculescu,” J. Operator Theory, 4, 133–150 (1980).

    MATH  MathSciNet  Google Scholar 

  18. D. A. Každan, “On the connection of the dual space of a group with the structure of its closed subgroups,” Funkts. Anal. Prilozh., 1, 71–74 (1967).

    Google Scholar 

  19. E. C. Lance, Hilbert C*-Modules — A Toolkit for Operator Algebraists, London Math. Soc. Lect. Note Ser., Vol. 210, Cambridge Univ. Press (1995).

  20. H. Lin, “Injective Hilbert C*-modules,” Pacific J. Math., 154, 131–164 (1992).

    MATH  MathSciNet  Google Scholar 

  21. A. Lubotzky and A. Żuk, On Property (τ) — Preliminary Version, preprint, http://www.ma.huji.ac.il/~alexlub/ (2003).

  22. V. M. Manuilov and E. V. Troitsky, “Hilbert C*- and W*-modules and their morphisms,” J. Math. Sci., 98, No. 2, 137–201 (2000).

    Article  MATH  MathSciNet  Google Scholar 

  23. V. M. Manuilov and E. V. Troitsky, Hilbert C*-Modules, Transl. Math. Monogr., Vol. 226, Amer. Math. Soc., Providence (2005).

    Google Scholar 

  24. A. S. Mishchenko and A. T. Fomenko, “The index of elliptic operators over C*-algebras,” Math. USSR Izv., 15, 87–112 (1980).

    Article  MATH  Google Scholar 

  25. G. J. Murphy, C*-Algebras and Operator Theory, Academic Press, San Diego (1990).

    Google Scholar 

  26. M. A. Naimark, Normed Rings [in Russian], Nauka, Moscow (1968).

    Google Scholar 

  27. A. A. Pavlov and E. V. Troitsky, “A C*-analogue of Kazhdan’s property (T),” Adv. Math., 216, 75–88 (2007).

    Article  MATH  MathSciNet  Google Scholar 

  28. G. K. Pedersen, C*-Algebras and Their Automorphism Groups, London Math. Soc. Monogr., Vol. 14, Academic Press, London (1979).

    Google Scholar 

  29. V. V. Seregin, “Reflexivity of C*-Hilbert modules obtained by the actions of a group,” Moscow Univ. Math. Bull., 58, No. 1, 44–48 (2003).

    MathSciNet  Google Scholar 

  30. E. V. Troitsky, “Discrete group actions and corresponding modules,” Proc. Amer. Math. Soc., 131, No. 11, 3411–3422 (2003).

    Article  MATH  MathSciNet  Google Scholar 

  31. S. Wagon, The Banach–Tarski Paradox, Cambridge (1985).

  32. N. E. Wegge-Olsen, K-Theory and C*-Algebras, Oxford Univ. Press (1993).

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to A. Pavlov.

Additional information

Translated from Fundamentalnaya i Prikladnaya Matematika, Vol. 13, No. 8, pp. 171–192, 2007.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Pavlov, A., Troitsky, E. Property (T) for topological groups and C*-algebras. J Math Sci 159, 863–878 (2009). https://doi.org/10.1007/s10958-009-9477-0

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10958-009-9477-0

Keywords

Navigation