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arXiv 1302.2293math.FAmath.GRmath.OA
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等价关系表示的l^{p}型von Neumann维数

An l^{p}-Version of von Neumann Dimension for Representations of Equivalence Relations

Ben Hayes

摘要:

在我们以前的论文“Sofic群的巴拿赫空间表示的l^{p}-版本的von Neumann维数”中,我们定义了sofic群在巴拿赫空间上作用的von Neumann维数的一个扩展版本。这个维数被特别地研究了G在l^{p}(G)上的平移作用,以及与群von Neumann代数相关的非交换L^{p}空间上的乘法。我们讨论如何可以类似地定义一个扩展的维度表示的等价关系。在l^{p}-情形下,我们还对等价关系定义了类似的l^{2}- Betti数,这可能有助于解释代价与第一个l^{2}-贝蒂数之间的关系.

英文摘要:

In our previous paper, "l^{p}-Version of von Neumann Dimension for Banach Space Representations of Sofic Groups," we define an extended version of von Neumann dimension for actions of a sofic group on a Banach space. This dimension was studied especially for the translation action of G on l^{p}(G), as well as the multiplication on the non-commutative L^{p} space associated with the group von Neumann algebra. We discuss how one can similarly define an extended dimension for representations of an equivalence relation. We also define an analogue of l^{2}-Betti numbers for equivalence relations in the l^{p}-case, this may shed some light on the conjectured relation between cost and first l^{2}-Betti number.

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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