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SUMMARY:Cristian Ivanescu (MacEwan University\, Edmonton)
DTSTART:20251119T200000Z
DTEND:20251119T210000Z
DTSTAMP:20260420T053456Z
UID:NYC-NCG/212
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NYC-NCG/212/
 ">Remarks on the Cuntz Semigroup</a>\nby Cristian Ivanescu (MacEwan Univer
 sity\, Edmonton) as part of Noncommutative geometry in NYC\n\n\nAbstract\n
 The Cuntz semigroup was introduced by J. Cuntz in the late 1970s as a refi
 nement of K-theory for C*-algebras. Around 2000\, A. Toms discovered examp
 les of simple $C^*$-algebras that share the same Elliott invariant\, given
  by K-theory\, traces\, and their pairings\, but differ in their Cuntz sem
 igroups. This showed that the Cuntz semigroup captures additional structur
 e beyond the classical invariants and renewed interest in its study.\nIn t
 his talk\, I will give an overview of the Cuntz semigroup\, explain its ba
 sic ideas\, and discuss some recent developments related to it. Topics wil
 l include the way-below relation and the notion of Cu-nuclearity.\n
LOCATION:https://researchseminars.org/talk/NYC-NCG/212/
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