Growth of permutational extensions
Growth of permutational extensions
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排列扩展的增长
DOI:
10.1007/s00222-011-0368-x
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发表时间:
2012
影响因子:
3.1
通讯作者:
Anna Erschler
中科院分区:
文献类型:
--
作者:
Laurent Bartholdi;Anna Erschler
We study the geometry of a class of group extensions, containing permutational wreath products, which we call “permutational extensions”. We construct for allk∈ℕ a torsion groupKkwith growth function $$v_{K_k}(n)\sim\exp(n^{1-(1-\alpha)^k}),\qquad 2^{3-3/\alpha}+2^{2-2/\alpha}+2^{1-1/\alpha}=2,$$ and a torsion-free groupHkwith growth functionThese are the first examples of groups of intermediate growth for which the asymptotics of their growth function is known.We construct a group of intermediate growth that contains the group of finitely supported permutations of a countable set as a subgroup. This gives the first example of a group of intermediate growth containing an infinite simple group as a subgroup.
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DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
L. Bartholdi;R. Grigorchuk
通讯作者:
R. Grigorchuk
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
Yuriy Leonov
通讯作者:
Yuriy Leonov
DOI:
10.1007/3-7643-7447-0_5
发表时间:
2005
期刊:
arXiv: Group Theory
影响因子:
--
作者:
R. Grigorchuk
通讯作者:
R. Grigorchuk
影响因子:
0.7
作者:
Bartholdi, Laurent;Erschler, Anna
通讯作者:
Erschler, Anna
DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
V. Govorov
通讯作者:
V. Govorov