Covers and curve complex

Covers and curve complex
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覆盖和曲线复合体

DOI:
10.2140/gt.2009.13.2141
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发表时间:
2007
期刊:
arXiv: Geometric Topology
影响因子:
--
通讯作者:
S. Schleimer
S. Schleimer
中科院分区:
--
文献类型:
--
作者:
Kasra Rafi;S. Schleimer

文献摘要

被引文献

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我们给出了曲线复形之间拟等距嵌入的第一个非平凡的例子;这些例子是由orbilold覆盖诱导的。这导致了映射类群之间新的拟等距嵌入。作为推论,在映射类群中,有限子群的正规化子是无失真的。
We provide the first nontrivial examples of quasi-isometric embeddings between curve complexes; these are induced by orbifold covers. This leads to new quasi-isometric embeddings between mapping class groups. As a corollary, in the mapping class group normalizers of finite subgroups are undistorted.