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Borel equivalence relations which are highly unfree
Published online by Cambridge University Press: 12 March 2014
Abstract
There is an ergodic, measure preserving, countable Borel equivalence relation E on a standard Borel probability space (X, μ) such that E∣c is not essentially free on any conull C ⊂ X.
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- Copyright © Association for Symbolic Logic 2008
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