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arXiv 1001.4482math.GRmath.GN
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弗洛伊德映射到相对双曲群的边界

Floyd maps to the boundaries of relatively hyperbolic groups

Victor Gerasimov

摘要:

构造了一个从相对双曲群的Floyd边界到Bowditch边界的连续等变映射。这样的映射是唯一的,除非该组是两端的。为了优化映射定理的证明和使用,我们提出了两个新的相对双曲性定义,它们等价于其他已知的定义。在我们的方法中,图中的一些“可见性”条件是必不可少的。我们引入了一类“可见性行动”,其中包含的类相对双曲的行动。对于可见性操作,收敛属性仍然有效。本文描述并利用了局部紧群的两个作用的“吸引子和”的一个相当一般的构造。

英文摘要:

A continuous equivariant map from the Floyd boundary of a relatively hyperbolic group (RHG for short) to its Bowditch boundary is constructed. Such a map is unique unless the group is two-ended. In order to optimize the proof and the usage of the map theorem we propose two new definitions of relative hyperbolicity equivalent to the other known definitions. In our approach some "visibility" conditions in graphs are essential. We introduce a class of "visibility actions" that contains the class of relatively hyperbolic actions. The convergence property still holds for the visibility actions. We describe and make use a rather general construction of "attractor sum" of two actions of a locally compact group.

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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