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Purely Infinite Simple C*-Crossed Products II

Published online by Cambridge University Press:  20 November 2018

JA A. Jeong
Affiliation:
Global Analysis Research Center, Department of Mathematics, Seoul National University, Seoul 151-742, Korea
Kazunori Kodaka
Affiliation:
Department of Mathematics, College of Science, Ryukyu University, Nishihara-cho, Okinawa 903-01, Japan
Hiroyuki Osaka
Affiliation:
Department of Mathematics, College of Science, Ryukyu University, Nishihara-cho, Okinawa 903-01, Japan
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Abstract

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We study the pure infiniteness of C* -crossed products by endomorphisms and automorphisms. Let A be a purely infinité simple unital C*-algebra. At first we show that a crossed product A × p N by a corner endomorphism p is purely infinite if it is simple. From this observation we prove that any simple C*-crossed products A ×αZ by an automorphism α is purely infinite. Combining this with the result in [Je] on pure infiniteness of crossed products by finite groups, one sees that if α is an outer action by a countable abelian group G then the simple C*-algebra A ×α G is purely infinite.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1996

References

[Bl] Blackadar, B., K-Theoryfor Operator Algebras, M. S. R. I. Publication Series 5, Springer-Verlag, (1986).Google Scholar
[BlCu] Blackadar, B. and Cuntz, J., The structure of stable algebraically simple C*-algebras, Amer. J. Math. 104(1981), 813822.Google Scholar
[BKR] Blackadar, B., Kumjian, A. and Rordam, M., Approximately central matrix units and the structure of noncommutative tori, K-Theory, 6(1992), 267—284.Google Scholar
[BrPe] Brown, L. G. and Pedersen, G. K., C*-algebras of real rank zero, J. Funct. Anal. 99(1991), 131149.Google Scholar
[CI] Clarke, N., A finite but not stably finite C*-algebra, Proc. Amer. Math. Soc. 96(1976), 8588.Google Scholar
[Cu 1] Cuntz, J., Simple C* -algebras generated by isometries, Comm. Math. Phys. 57(1977), 173—185.Google Scholar
[Cu 2] Cuntz, J., The structure of multiplication and addition in simple C*-algebras, Math. Scand. 40(1977), 215233.Google Scholar
[Cu 3] Cuntz, J., K-theoryfor certain C*-algebras, Ann. Math. 113(1981), 181197.Google Scholar
[Je] Jeong, J. A., Purely infinite simple C*-crossedproducts, Proc. Amer. Math. Soc; to appear.Google Scholar
[Kill Kishmoto, A., Simple crossed products of C*-algebras by locally compact abelian groups, Yokohama Math. J. 28(1980), 6985.Google Scholar
[Ki2] Kishmoto, A., Outer automorphisms and reduced crossed products of simple CT-algebras, Comm. Math. Phys. 81(1981), 429435.Google Scholar
[Ku] Kusuda, M., Hereditary C*-subalgebras of C*-crossedproducts, Proc. Amer. Math. Soc. 102(1988), 90 94.Google Scholar
[OP] Olesen, D. and Pedersen, G. K., Applications of the Connes spectrum to C*-dynamical systems, HI, J. Funct. Anal. 45(1982), 357390.Google Scholar
[Pa] Paschke, W., The crossed product of a C*-algebra by an endomorphism, Proc. Amer. Math. Soc. 80(1990), 113118.Google Scholar
[Pe] Pedersen, G. K., C* -algebras and their automorphism groups, Academic Press, New York (1990).Google Scholar
[Røl] Rørdam, M., On the structure of simple C*-algebras tensored with a UHF-algebra, J. Funct. Anal. 100(1991), 117.Google Scholar
[Rø2] Rørdam, M. Classification of inductive limits ofCuntz algebras, J. Reine. Angew. Math. 440(1993), 175 200.Google Scholar
|Rø3] Rørdam, M., Classification of certain infinite simple C*-algebras, preprint.Google Scholar
[Zh] Zhang, S., Certain C* -algebras with real rank zero and their corona and multiplier algebras. Part 1, Pacific J. Math. 155(1992), 169197.Google Scholar