Uniform Local Amenability

Details Uniform Local Amenability Uniform Local Amenability

2012-03-28

arxiv.org/abs/1203.6169v1

Mathematics

Metric Geometry

Scientific paper

The main results of this paper show that various coarse (`large scale') geometric properties are closely related. In particular, we show that property A implies the operator norm localisation property, and thus that norms of operators associated to a very large class of metric spaces can be effectively estimated. The main tool is a new property called uniform local amenability. This property is easy to negate, which we use to study some `bad' spaces. We also generalise and reprove a theorem of Nowak relating amenability and asymptotic dimension in the quantitative setting.

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