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Acylindrical hyperbolicity of automorphism groups of infinitely ended groups
Journal of Topology ( IF 0.8 ) Pub Date : 2021-09-13 , DOI: 10.1112/topo.12203
Anthony Genevois 1 , Camille Horbez 2
Affiliation  

We prove that the automorphism group of every infinitely ended finitely generated group is acylindrically hyperbolic. In particular Aut ( F n ) is acylindrically hyperbolic for every n 2 . More generally, if G is a group which is not virtually cyclic, and hyperbolic relative to a finite collection P of finitely generated proper subgroups, then Aut ( G , P ) is acylindrically hyperbolic.

中文翻译:

无限端群自同构群的非圆柱双曲性

我们证明了每个无限端有限生成群的自同构群都是圆柱双曲线的。特别是 自动 ( F n ) 对于每一个都是圆柱双曲线的 n 2 . 更一般地,如果 G 是一个实际上不是循环的群,并且相对于有限集合是双曲线的 有限生成的真子群,然后 自动 ( G , ) 是圆柱双曲线的。
更新日期:2021-09-13
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