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arXiv 1104.2301math.GRcs.FL
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几何半群理论

Geometric Semigroup Theory

Jon McCammond, John Rhodes, Benjamin Steinberg

摘要:

几何半群理论是利用其相关自动机的拓扑和几何对有限生成半群的系统研究。在这篇文章中,我们展示了如何在有限半群和自动机上的一些容易定义的扩展导致相应的有限半群作用的图的简化。我们特别证明了每个有限半群都可以扩张,使得扩张作用在一个标号有向图上,它在许多方面类似于自由Burnside半群的右Cayley图.

英文摘要:

Geometric semigroup theory is the systematic investigation of finitely-generated semigroups using the topology and geometry of their associated automata. In this article we show how a number of easily-defined expansions on finite semigroups and automata lead to simplifications of the graphs on which the corresponding finite semigroups act. We show in particular that every finite semigroup can be finitely expanded so that the expansion acts on a labeled directed graph which resembles the right Cayley graph of a free Burnside semigroup in many respects.

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