关于局部紧群的von Neumann问题
About von Neumann's problem for locally compact groups
摘要:
我们注意到一个推广的怀特的几何解决方案的冯诺依曼问题的局部紧群的Borel和Clopen分段平移。这加强了帕特森的一个结果存在的博雷尔悖论分解的非顺从局部紧群。在此过程中,我们研究粗糙空间的一些几何性质与其摆动群的某些代数特征之间的联系。
英文摘要:
We note a generalization of Whyte's geometric solution to the von Neumann problem for locally compact groups in terms of Borel and clopen piecewise translations. This strengthens a result of Paterson on the existence of Borel paradoxical decompositions for non-amenable locally compact groups. Along the way, we study the connection between some geometric properties of coarse spaces and certain algebraic characteristics of their wobbling groups.
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