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SUMMARY:From directed graphs of groups to Kirchberg algebras - Victor Wu (
 University of Sydney)
DTSTART:20250715T092500Z
DTEND:20250715T094500Z
UID:TALK233047@talks.cam.ac.uk
DESCRIPTION:Directed graph algebras have long been studied as tractable ex
 amples of C*-algebras\, but they are limited by their inability to have to
 rsion in their K_1 group. Graphs of groups\, which are famed in geometric 
 group theory because of their intimate connection with group actions on tr
 ees\, are a more recent addition to the C*-algebra scene. In this talk\, I
  will introduce the child of these two concepts &ndash\; directed graphs o
 f groups &ndash\; and describe how their algebras inherit the best propert
 ies of its parents&rsquo\;\, with a view to outlining how we can use these
  algebras to model a class of C*-algebras (stable UCT Kirchberg algebras) 
 which is classified completely by K-theory.
LOCATION:External
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