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Exactness of locally compact groups
Published 6 Mar 2016 in math.GR and math.OA | (1603.01829v3)
Abstract: We give some new characterizations of exactness for locally compact second countable groups. In particular, we prove that a locally compact second countable group is exact if and only if it admits a topologically amenable action on a compact Hausdorff space. This answers an open question by Anantharaman-Delaroche.
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