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SUMMARY:Changying Ding (UCLA)
DTSTART:20240501T190000Z
DTEND:20240501T200000Z
DTSTAMP:20260420T053237Z
UID:NYC-NCG/163
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/163/
 ">On Cartan subalgebras of $II_1$ factors arising from Bernoulli actions o
 f weakly amenable groups</a>\nby Changying Ding (UCLA) as part of Noncommu
 tative geometry in NYC\n\n\nAbstract\nA conjecture of Popa states that the
  $II_1$ factor arising from a Bernoulli action of a nonamenable group has 
 a unique (group measure space) Cartan subalgebra\, up to unitary conjugacy
 . In this talk\, I will discuss this conjecture and show that it holds for
  weakly amenable groups with constant $1$ among algebraic actions. The pro
 of involves the notion of properly proximal groups introduced by Boutonnet
 \, Ioana\, and Peterson.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/163/
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