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SUMMARY:Sara Azzali (Universität Hamburg)
DTSTART:20200617T190000Z
DTEND:20200617T200000Z
DTSTAMP:20260420T052655Z
UID:NYC-NCG/9
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/9/">
 KK-theory with real coefficients\, traces\, and discrete group actions</a>
 \nby Sara Azzali (Universität Hamburg) as part of Noncommutative geometry
  in NYC\n\n\nAbstract\nThe groups of KK-theory were introduced by Kasparov
  in the 1980’s and have important applications to many geometric and top
 ological problems which are tackled by C*-algebraic techniques. \n\nIn thi
 s talk\, we investigate KK-theory groups with coefficients in $\\mathbb R$
 . By construction\, the adding of real coefficients provides natural recep
 tacles for classes coming from traces on $C^*$-algebras. \nWe focus on app
 lications to the study of discrete groups actions on $C^*$-algebras. \nWe 
 show that in equivariant KK-theory with coefficients one can "localize at 
 the unit element“ of the discrete group\, and this procedure has interes
 ting consequences on the Baum–Connes isomorphism conjecture.\nBased on j
 oint works with Paolo Antonini and Georges Skandalis.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/9/
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