School Seminars and Colloquia

Subequivalence relations and Epstein's induced action construction

School Seminar

by Greg Hjorth

Institution: The University of Melbourne
Date: Wed 23rd April 2008
Time: 4:15 PM
Location: Room 215, Richard Berry Building, The University of Melbourne

Abstract: A key step in Inessa Epstein's recent proof of many orbit inequivalent actions for non-amenable groups was the method of inducing an action from a subequivalence. In the last couple of weeks Ioana, Kechris, and Tsankov have produced a preprint subjecting this construction to a rigorous analysis. I will describe her induced action construction and present their criteria for when the resulting action is mixing.

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