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Non-treeability for product group actions |
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| Authors: | Greg Hjorth |
| Institution: | (1) Department of Mathematics and Statistics, University of Melbourne, Parkville, 3010, Australia |
| Abstract: | A product of two lcsc non-compact groups G 1 × G 2 acting freely by measure preserving transformation on a standard Borel probability space gives rise to a non-treeable equivalence relation unless both groups are amenable. Partially supported by NSF grant DMS 0140503 |
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