| Abstract |
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In this talk we'll discuss the Furstenberg entropy of non-singular actions
and in particular, the existence of arbitrarily small entropy values, for a
given group. Apparently, not having small entropy values characterizes
Kazhdan's property (T) of countable groups. I'll define and explain the
mentioned notions, so it will be accessible to anyone interested in group
actions.
Joint work with Lewis Bowen and Omer Tamuz.
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