On Cayley graphs of virtually free groups

On Cayley graphs of virtually free groups
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关于几乎自由群的凯莱图

DOI:
10.1515/gcc.2011.012
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发表时间:
2009
期刊:
arXiv: Group Theory
影响因子:
--
通讯作者:
Yago Antolín
Yago Antolín
中科院分区:
--
文献类型:
--
作者:
Yago Antolín

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1985年,Dunwoody证明了有限可表示群是可达的。Dunwoody的结果被用来证明上下文无关群、拟等距于树的群或渐近维为1的有限可表示群实际上是自由的。利用1979年Dunwoody的另一个定理,我们研究了群关于其Cayley图的几乎自由的情况,并得到了上述结果和以前依赖于这些结果的其他结果的新证明。
Abstract In 1985, Dunwoody showed that finitely presentable groups are accessible. Dunwoody's result was used to show that context-free groups, groups quasi-isometric to trees or finitely presentable groups of asymptotic dimension 1 are virtually free. Using another theorem of Dunwoody of 1979, we study when a group is virtually free in terms of its Cayley graph, and we obtain new proofs of the mentioned results and others previously depending on these.
收缩期复合波和群的充盈不变量
DOI: 10.2140/gt.2007.11.727
发表时间: 2007
影响因子: 2
作者:
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通讯作者: J. Świa̧tkowski