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SUMMARY:Xin Ma (University of Memphis)
DTSTART:20211124T200000Z
DTEND:20211124T210000Z
DTSTAMP:20260420T052725Z
UID:NYC-NCG/80
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/80/"
 >Fiberwise amenability and almost elementariness for étale groupoids</a>\
 nby Xin Ma (University of Memphis) as part of Noncommutative geometry in N
 YC\n\n\nAbstract\nIn this talk\, I will discuss two new properties for loc
 ally compact Hausdorff étale groupoids. One is from a coarse geometric vi
 ew called fiberwise amenability. Another one is called almost elementarine
 ss\, which is a new finite-dimensional approximation property. I will expl
 ain how these notions related to almost finiteness defined by Matui and re
 fined by Kerr and show our almost elementariness implying tracial Z-stabil
 ity of reduced groupoid C*-algebras. As an application. This implies that 
 Matui's almost finiteness in the groupoid setting also implies Z-stability
  when the groupoid is minimal 2nd countable and topological amenable. This
  was open in general before. I will also present more applications if time
  permits. This is based on joint work with Jianchao Wu.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/80/
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