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arXiv 1005.0822math.OAmath.FAmath.RA
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图代数与一个嵌入定理

Tracial algebras and an embedding theorem

Tim Netzer, Andreas Thom

摘要:

证明了可数生成 *-代数上的每一个正迹都可以用一般矩阵代数上的正迹来逼近。这意味着每个可数生成迹 *-代数都可以嵌入到泛矩阵代数的度量超积中。作为一个特殊的结果,每个具有可分预对偶的有限von Neumann代数都可以嵌入迹 *-代数的超积中,迹 *-代数作为 *-代数嵌入交换代数上的矩阵环中。

英文摘要:

We prove that every positive trace on a countably generated *-algebra can be approximated by positive traces on algebras of generic matrices. This implies that every countably generated tracial *-algebra can be embedded into a metric ultraproduct of generic matrix algebras. As a particular consequence, every finite von Neumann algebra with separable pre-dual can be embedded into an ultraproduct of tracial *-algebras, which as *-algebras embed into a matrix-ring over a commutative algebra.

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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