Uniform growth of groups acting on Cartan–Hadamard spaces

Uniform growth of groups acting on Cartan–Hadamard spaces
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作用于嘉当-哈达玛空间的群的均匀增长

DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
Sylvain Gallot
Sylvain Gallot
中科院分区:
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文献类型:
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作者:
G. Besson;G. Courtois;Sylvain Gallot

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本文研究了非线性生成群的增长性。我们回顾了群的代数熵的定义,并证明了如果群作为具有收缩负曲率的Cartan-Hadamard流形的等距群的离散子群,则Tits替代是真的。更确切地说,这个群要么是几乎幂零的,要么是由一个显式常数约束的一致增长。
In this paper we investigate the growth of finitely generated groups. We recall the definition of the algebraic entropy of a group and show that if the group is acting as a discrete subgroup of the isometry group of a Cartan�Hadamard manifold with pinched negative curvature then a Tits alternative is true. More precisely the group is either virtually nilpotent or has a uniform growth bounded below by an explicit constant.