On growth of homology torsion in amenable groups
On growth of homology torsion in amenable groups
复制标题
顺应群中同调挠率的增长
DOI:
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发表时间:
2015
影响因子:
0.8
通讯作者:
N. Nikolov
中科院分区:
文献类型:
--
作者:
Aditi Kar;P. Kropholler;N. Nikolov
Abstract Suppose an amenable group G is acting freely on a simply connected simplicial complex $~{X}$ with compact quotient X. Fix n ≥ 1, assume $H_n(~{X}, mathbb{Z}) = 0$ and let (Hi ) be a Farber chain in G. We prove that the torsion of the integral homology in dimension n of $~{X}/H_i$ grows subexponentially in [G : Hi ]. This fails if X is not compact. We provide the first examples of amenable groups for which torsion in homology grows faster than any given function. These examples include some solvable groups of derived length 3 which is the minimal possible.
影响因子:
2.5
作者:
Abert M
通讯作者:
Abert M
影响因子:
2.2
作者:
W. Lueck
通讯作者:
W. Lueck