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arXiv 1002.2590math.GR
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双曲群的同构问题

The isomorphism problem for all hyperbolic groups

François Dahmani, Vincent Guirardel

摘要:

我们给出了一个解决方案,德恩的同构问题的类的所有双曲群,可能与扭转。我们还证明了一个相对版本的外围结构的群体。作为推论,我们给出了Whitehead问题的统一解,该问题询问双曲群$G$的两个元组的元素是否在$\Aut(G)$的作用下处于同一轨道。我们还得到了一个计算双曲群的保周边结构的自同构群群的生成集的算法。

英文摘要:

We give a solution to Dehn's isomorphism problem for the class of all hyperbolic groups, possibly with torsion. We also prove a relative version for groups with peripheral structures. As a corollary, we give a uniform solution to Whitehead's problem asking whether two tuples of elements of a hyperbolic group $G$ are in the same orbit under the action of $\Aut(G)$. We also get an algorithm computing a generating set of the group of automorphisms of a hyperbolic group preserving a peripheral structure.

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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