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Property A and affine buildings

By S.J. Campbell

Abstract

Yu's Property A is a non-equivariant generalisation of amenability introduced in his study of the coarse Baum Connes conjecture. In this paper we show that all affine buildings of type A2, B2 and G2 have Property A. Together with results of Guentner, Higson and Weinberger, this completes a programme to show that all affine building have Property A. In passing we use our technique to obtain a new proof for groups acting on buildings.<br/>The author was supported by EPSRC postdoctoral fellowship EP/C53171X/1.<br/

Topics: QA
Year: 2009
OAI identifier: oai:eprints.soton.ac.uk:69580
Provided by: e-Prints Soton

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