Polytope invariants of groups and manifolds

Duration: 1 hour 3 mins
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Description: Friedl, S (Universität Regensburg, Universität Regensburg)
Monday 30th January 2017 - 10:00 to 11:00
 
Created: 2017-02-10 10:00
Collection: Homology theories in low dimensional topology
Publisher: Isaac Newton Institute
Copyright: Friedl, S
Language: eng (English)
Distribution: World     (downloadable)
Explicit content: No
Aspect Ratio: 16:9
Screencast: No
Bumper: UCS Default
Trailer: UCS Default
 
Abstract: Co-authors: Wolfgang L\"uck (University of Bonn), Kevin Schreve (University of Michigan), Stephan Tillmann (University of Sydney)

We will associate to L^2-acyclic groups and manifolds, modulo some not overly restrictive technical hypothesis, a formal difference of polytopes. We will relate it to the Thurston norm and compute it if the fundamental group has a 2-generator 1-relator presentation
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