Asymptotic isoperimetry of balls in metric measure spaces

Details Asymptotic isoperimetry of balls in metric measure spaces Asymptotic isoperimetry of balls in metric measure spaces

2005-06-17

arxiv.org/abs/math/0506363v2

Mathematics

Metric Geometry

Scientific paper

In this paper, we study the asymptotic behavior of the volume of spheres in metric measure spaces. We first introduce a general setting adapted to the study of asymptotic isoperimetry in a general class of metric measure spaces. We then introduce a notion of "being asymptotically isoperimetric" for a family of finite and unbounded measure subsets. We show that there exist graphs with uniform polynomial growth whose balls are not asymptotically isoperimetric and we discuss the stability of related properties under quasi-isometries. Finally, we study the asymptotically isoperimetric properties of connected subsets in a metric measure space. In particular, we build graphs with uniform polynomial growth whose connected subsets are not asymptotically isoperimetric.

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