| 16:30-17:20 in MS6627 Greg Hjorth An alternative proof of Gaboriau-Popa Abstract. Damien Gaboriau and Sorin Popa showed that the free group on two generators admits continuum many measure preserving, ergodic, orbit inequivalent actions on standard Borel probability spaces. I will sketch a proof which does not use property (T) -- and discuss some questions this argument raises.
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