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EXACTNESS OF FREE AND AMENABLE GROUPS BY THE CONSTRUCTION OF OZAWA KERNELS

Published online by Cambridge University Press:  31 May 2006

SARAH CAMPBELL
Affiliation:
School of Mathematics, University of Southampton, Highfield, Southampton SO17 1BJ, United [email protected]
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Abstract

Using properties of their Cayley graphs, specific examples of Ozawa kernels are constructed for both free and amenable groups, thus showing that these groups satisfy Property $O$. It is deduced both that these groups are exact and satisfy Yu's Property $A$.

Type
Papers
Copyright
© The London Mathematical Society 2006

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Footnotes

Supported by EPSRC.