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

Linear maps preserving ideals of $C^{*}$-algebras

Author(s): Sang Og Kim
Journal: Proc. Amer. Math. Soc. 129 (2001), 1665-1668.
MSC (2000): Primary 47B49
Posted: October 25, 2000
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Abstract: We show that unital self-adjoint linear bijections of matrix algebras, type $II_{1}$ factors and abelian $C^{*}$-algebras preserving maximal left ideals are isomorphisms and we show that a unital continuous linear map of a $C^{*}$-algebra $A$ that maps the minimal left ideal $Ap$ into itself is the identity map.


References:

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M-D. Choi et. al., On positive linear maps preserving invertibility, J. Funct. Anal. 59 (1984), 462-469. MR 86a:46071

2.
B. E. Johnson, Centralizers and operators reduced by maximal ideals, J. London Math. Soc. 43 (1968), 231-233. MR 36:6937

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L. Molnár, Some linear preserver problems on $B(H)$concerning rank and corank, Linear Algebra Appl. 286 (1999), 311-321. MR 2000b:47089

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V. S. Shul'man, Operators preserving ideals in $C^{*}$-algebras, Studia Math. 109(1) (1994), 67-72. MR 95b:46097

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E. Størmer, On the Jordan structure of $C^{*}$-algebras, Trans. Amer. Math. Soc. 120 (1965), 438-447. MR 32:2930


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Additional Information:

Sang Og Kim
Affiliation: Department of Mathematics, Hallym University, Chuncheon 200-702, Korea
Email: sokim@sun.hallym.ac.kr

DOI: 10.1090/S0002-9939-00-06003-2
PII: S 0002-9939(00)06003-2
Keywords: $C^{*}$-algebra, derivation, minimal ideal
Received by editor(s): August 31, 1999
Posted: October 25, 2000
Communicated by: Joseph A. Ball
Copyright of article: Copyright 2000, American Mathematical Society


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The following works have cited this article

2. B. E. Johnson, Centralizers and operators reduced by maximal ideals, J. London Math. Soc. 43 (1968), 231-233.

M-D. Choi et al, On positive linear maps preserving invertibility, J. Funct. Anal. 59 (1984), 462-469.

L. Moln\ar, Some linear preserver problems on $B(H)$ concerning rank and corank, Linear Algebra Appl. 286 (1999), 311-321.


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