Hyperbolically Embedded Subgroups and Rotating Families in Groups Acting on Hyperbolic Spaces(Memoirs of the American Mathematical Society)

双曲线嵌入子群与群对双曲线空间作用的旋转族(丛书)

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751.00
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出版时间
2017年03月30日
装      帧
平装
ISBN
9781470421946
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页      码
154
语      种
英文
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图书简介
The authors introduce and study the notions of hyperbolically embedded and very rotating families of subgroups. The former notion can be thought of as a generalization of the peripheral structure of a relatively hyperbolic group, while the latter one provides a natural framework for developing a geometric version of small cancellation theory. Examples of such families naturally occur in groups acting on hyperbolic spaces including hyperbolic and relatively hyperbolic groups, mapping class groups, $Out(F_n)$, and the Cremona group. Other examples can be found among groups acting geometrically on $CAT(0)$ spaces, fundamental groups of graphs of groups, etc. The authors obtain a number of general results about rotating families and hyperbolically embedded subgroups; although their technique applies to a wide class of groups, it is capable of producing new results even for well-studied particular classes. For instance, the authors solve two open problems about mapping class groups, and obtain some results which are new even for relatively hyperbolic groups.
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