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SUMMARY:Polytope invariants of groups and manifolds - Stefan Friedl (Unive
 rsität Regensburg)
DTSTART:20170130T100000Z
DTEND:20170130T110000Z
UID:TALK70404@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<span>Co-authors: Wolfgang L\\"uck (University of Bonn)\, Kevi
 n Schreve (University of Michigan)\, Stephan Tillmann (University of Sydne
 y)<br></span><span><br>We will associate to&nbsp\;L^2-acyclic groups and m
 anifolds\, modulo some not overly restrictive technical hypothesis\, a for
 mal difference of polytopes. We will relate it to the Thurston norm and co
 mpute it if the fundamental group has a 2-generator 1-relator presentation
 </span>
LOCATION:Seminar Room 1\, Newton Institute
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