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BEGIN:VEVENT
UID:DSC-2815
DTSTART;TZID=Europe/Berlin:20120523T170000
SEQUENCE:1336140057
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20120523T180000
URL:https://www.dresden-science-calendar.de/calendar/en/detail/2815
LOCATION:TUD Willers-Bau\, Zellescher Weg 12-1401069 Dresden
SUMMARY:Thom: Entropy and Determinants
CLASS:PUBLIC
DESCRIPTION:Speaker: Prof. Dr. Andreas Thom\nInstitute of Speaker: Universi
 tät Leipzig\, Mathematisches Institut\nTopics:\nMathematik\n Location:\n 
  Name: TUD Willers-Bau (WIL C 307)\n  Street: Zellescher Weg 12-14\n  City
 : 01069 Dresden\n  Phone: \n  Fax: \nDescription: This talk is about the e
 ntropy of group actions of amenable groups\; all notions will be motivated
  and explained clearly. I will present recent progress on questions asked 
 by Christopher Deninger about the  entropy of certain principal algebraic 
 dynamical systems. I will show that the entropy of an algebraic dynamical 
 system agrees with the $L^2$-torsion of the dual module over the integral 
 group ring of the group acting. As a by-product we prove vanishing of the 
 $L^2$-torsion of amenable groups\, which was conjectured by Wolfgang Lueck
 . This is joint work with Hanfeng Li.
DTSTAMP:20260822T163110Z
CREATED:20120330T091431Z
LAST-MODIFIED:20120504T140057Z
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