Interval exchanges that do not embed in free groups

Interval exchanges that do not embed in free groups
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不嵌入自由组的间隔交换

DOI:
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发表时间:
2010
期刊:
arXiv: Dynamical Systems
影响因子:
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通讯作者:
Christopher F. Novak
Christopher F. Novak
中科院分区:
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文献类型:
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作者:
Christopher F. Novak

文献摘要

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相似文献

不相交旋转图是单位区间上的区间交换变换 (IET),通过对有限数量的不变子区间进行旋转来起作用。目前尚不清楚所有 IET 的群 E 是否拥有任何非阿贝尔自由子群。结果表明,不相交旋转映射不可能出现在与非交换自由群同构的 E 子群中。
A disjoint rotation map is an interval exchange transformation (IET) on the unit interval that acts by rotation on a finite number of invariant subintervals. It is currently unknown whether the group E of all IETs possesses any non-abelian free subgroups. It is shown that it is not possible for a disjoint rotation map to occur in a subgroup of E that is isomorphic to a non-abelian free group.