The asymptotic geometry of right-angled Artin groups, I

The asymptotic geometry of right-angled Artin groups, I
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直角 Artin 群的渐近几何,I

DOI:
10.2140/gt.2008.12.1653
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发表时间:
2007
影响因子:
2
通讯作者:
M. Sageev
M. Sageev
中科院分区:
数学1区
文献类型:
--
作者:
M. Bestvina;B. Kleiner;M. Sageev

文献摘要

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我们研究原子直角Artin群--它们的定义图没有长度为4的圈,也没有分离的顶点、分离的边或分离的顶点星。我们证明了这些群不是准等距刚性的,但刚性的中间形式是成立的。由此推论出两个原子群准等距当且仅当它们是同构的。20F65、20F69;20F67、05C25
We study atomic right-angled Artin groups ‐ those whose defining graph has no cycles of length 4, and no separating vertices, separating edges, or separating vertex stars. We show that these groups are not quasi-isometrically rigid, but that an intermediate form of rigidity does hold. We deduce from this that two atomic groups are quasi-isometric iff they are isomorphic. 20F65, 20F69; 20F67, 05C25