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arXiv 1408.0678math.FAmath.OA
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极限算子的度量方法

A metric approach to limit operators

Jan Spakula, Rufus Willett

摘要:

我们将Rabinovich、Roch和Silbermann的极限算子机制从$\mathbb{Z}^N$推广到(有界几何,强)离散度量空间。我们不假设在我们的度量空间上存在任何群结构或作用。利用这一机制和最近的想法Lindner和Seidel,我们表明,如果一个度量空间X有于的性质A,那么一个带占主导地位的操作X是Fredholm当且仅当其所有的极限运营商是可逆的。我们还证明了这对于不具有性质A的度量空间总是失败的。

英文摘要:

We extend the limit operator machinery of Rabinovich, Roch, and Silbermann from $\mathbb{Z}^N$ to (bounded geometry, strongly) discrete metric spaces. We do not assume the presence of any group structure or action on our metric spaces. Using this machinery and recent ideas of Lindner and Seidel, we show that if a metric space X has Yu's property A, then a band-dominated operator on X is Fredholm if and only if all of its limit operators are invertible. We also show that this always fails for metric spaces without property A.

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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