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SUMMARY:Hannes Thiel (University of Münster)
DTSTART:20200604T154500Z
DTEND:20200604T163000Z
DTSTAMP:20260423T022034Z
UID:UKVOAS/5
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/UKVOAS/5/">C
 untz semigroups</a>\nby Hannes Thiel (University of Münster) as part of U
 K Virtual operator algebras seminar\n\n\nAbstract\nThe Cuntz semigroup is 
 a geometric refinement of K-theory that plays an important role in the str
 ucture theory of C*-algebras. It is defined analogously to the Murray-von 
 Neumann semigroup by using equivalence classes of positive elements instea
 d of projections.  \nStarting with the definition of the Cuntz semigroup o
 f a C*-algebra\, we will look at some of its classical applications. I wil
 l then talk about the recent breakthroughs in the structure theory of Cunt
 z semigroups and some of the consequences.\n\nAssumed Knowledge: Basic C*-
 algebra theory\, including comparison theory for projections.\n
LOCATION:https://researchseminars.org/talk/UKVOAS/5/
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