Amenable actions, free products and a fixed point property

We investigate the class of groups admitting an action on a set with an invariant mean. It turns out that many free products admit such an action. We give a complete characterisation of such free products in terms of a strong fixed point property.


Published in:
Bulletin of the London Mathematical Society, 39, 1, 138-150
Year:
2007
Laboratories:




 Record created 2008-10-29, last modified 2018-03-17


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