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arXiv math/9909046math.OAmath.FA
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局部自同构算子理想上的乘法映射

Multiplicative maps on ideals of operators which are local automorphisms

Lajos Molnar

摘要:

本文给出了关于$C^*$ -代数B(H)的自同构群的自反性结果,H是可分的希尔伯特空间.设$ϕ:B(H)\to B(H)$是一个乘法映射(不假设线性或连续性),它在每一点都可以用算子范数中B(H)的自同构(当然,这些自同构可能依赖于点)来近似。则$ϕ$是代数B(H)的自同构.

英文摘要:

We present the following reflexivity-like result concerning the automorphism group of the $C^*$-algebra B(H), H being a separable Hilbert space. Let $ϕ:B(H)\to B(H)$ be a multiplicative map (no linearity or continuity is assumed) which can be approximated at every point by automorphisms of B(H) (these automorphisms may, of course, depend on the point) in the operator norm. Then $ϕ$ is an automorphism of the algebra B(H).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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