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arXiv 1811.02269math.RAmath.OA
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Leavitt路代数的广群方法

The groupoid approach to Leavitt path algebras

Simon W. Rigby

摘要:

当理论的莱维特路径代数已经相当先进,人们发现,一些更困难的问题容易受到新的方法使用拓扑群胚。使这成为可能的主要结果是图的莱维特路代数是分次同构于图的边界路广群的斯坦伯格代数。本文分三部分:第一部分是群胚的Steinberg代数,第二部分是图的道路空间和边界道路群胚,第三部分是图的Leavitt道路代数。它是关于这些主题的独立参考,旨在对初学者和专家都有用。虽然重温的基本原理,我们证明了一些结果在更大的一般性比其他地方,包括莱维特路径代数的唯一性定理。

英文摘要:

When the theory of Leavitt path algebras was already quite advanced, it was discovered that some of the more difficult questions were susceptible to a new approach using topological groupoids. The main result that makes this possible is that the Leavitt path algebra of a graph is graded isomorphic to the Steinberg algebra of the graph's boundary path groupoid. This expository paper has three parts: Part 1 is on the Steinberg algebra of a groupoid, Part 2 is on the path space and boundary path groupoid of a graph, and Part 3 is on the Leavitt path algebra of a graph. It is a self-contained reference on these topics, intended to be useful to beginners and experts alike. While revisiting the fundamentals, we prove some results in greater generality than can be found elsewhere, including the uniqueness theorems for Leavitt path algebras.

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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