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Polytope invariants of groups and manifolds

Presented by: 
Stefan Friedl Universität Regensburg
Monday 30th January 2017 - 10:00 to 11:00
INI Seminar Room 1
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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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons