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VERSION:2.0
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CALSCALE:GREGORIAN
X-WR-CALNAME: Prof. Rufus Willet - Approximate representations and K-theory
X-WR-TIMEZONE:Central Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260722T021830Z
UID:tag:localist.com\,2008:EventInstance_52339416274570
DTSTART:20260331T210000Z
DTEND:20260331T220000Z
DESCRIPTION:Prof. Rufus Willett (University of Hawaii at Manoa)\n\nApproxim
 ate representations and K-theory\n\nAbstract\n\nA group representation of 
 a finitely generated group is a choice of finitely many unitary matrices (
 one for each generator) that satisfy the relations defining the group.  Fo
 r example\, a representation of Z x Z is just a choice of two unitary matr
 ices that commute with each other.  On the other hand\, an approximate rep
 resentation of a group is a choice of unitary matrices that approximately 
 satisfies the representations defining the group. \n\n \n\nI’ll discuss 
 the problem of approximating approximate (with apologies for the tongue tw
 ister) representations by honest representations.  I’ll try to give a se
 nse of the tools from analysis (like group C*-algebras) and topology (clas
 sifying spaces and K-theory) that come into play and why\, without assumin
 g prior knowledge of these.
LOCATION:William E. and Jean Jones Tucker Technology Center\, TUC 352
SUMMARY: Prof. Rufus Willet - Approximate representations and K-theory
URL;VALUE=URI:https://calendar.tcu.edu/event/prof-rufus-willet-approximate-
 representations-and-k-theory
CATEGORIES:Lectures & Presentations
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