Translation-like actions of nilpotent groups

Translation-like actions of nilpotent groups
复制标题

幂零群的类翻译行为

DOI:
--
复制
发表时间:
2017
期刊:
Journal of Topology and Analysis (JTA)
影响因子:
--
通讯作者:
Mark Pengitore
Mark Pengitore
中科院分区:
--
文献类型:
--
作者:
D. Cohen;Mark Pengitore

文献摘要

被引文献

相似文献

我们为幂零群上的类似翻译的行为提供了新的障碍。假设给我们两个有限生成的无挠幂零群,它们具有相同程度的多项式增长,但非同构卡诺完成(渐近锥)。我们证明不存在从一组到另一组的单射 Lipschitz 函数。由此可见,任何一个群体都不能像翻译一样对待对方。由于 Lipschitz 注入不需要是双 Lipschitz 嵌入,因此这是在相同同质维度的群体背景下对 Pansu 经典结果的强化。
We give a new obstruction to translation-like actions on nilpotent groups. Suppose we are given two finitely generated torsion-free nilpotent groups with the same degree of polynomial growth, but non-isomorphic Carnot completions (asymptotic cones). We show that there exists no injective Lipschitz function from one group to the other. It follows that neither group can act translation-like on the other. As Lipschitz injections need not be bi-Lipschitz embeddings, this is a strengthening of a classical result of Pansu in the context of groups of the same homogeneous dimension.