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arXiv 2006.14534math.GRmath.CO
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可解Baumslag-Solitar群增长率的一个新证明

A new proof of the growth rate of the solvable Baumslag-Solitar groups

Jennifer Taback, Alden Walker

摘要:

我们展示了一个正规的语言测地线的一个大的元素集的$BS(1,n)$,并表明,这种语言的增长率是增长率的组。这提供了$BS(1,n)$生长速率的直接计算,该生长速率最初由Collins、Edjvet和Gill在[5]中计算。我们的方法是基于我们在[8]中开发的那些方法,以表明$BS(1,n)$具有正、负和零共轭曲率的元素的正密度,正如Bar-Natan,Duchin和Kropholler在[1]中介绍的那样。

英文摘要:

We exhibit a regular language of geodesics for a large set of elements of $BS(1,n)$ and show that the growth rate of this language is the growth rate of the group. This provides a straightforward calculation of the growth rate of $BS(1,n)$, which was initially computed by Collins, Edjvet and Gill in [5]. Our methods are based on those we develop in [8] to show that $BS(1,n)$ has a positive density of elements of positive, negative and zero conjugation curvature, as introduced by Bar-Natan, Duchin and Kropholler in [1].

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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