May 12, 2015
1:50PM - 2:45PM
Cockins Hall 240
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2015-05-12 13:50:00
2015-05-12 14:45:00
Geometric Group Theory Seminar - Grigori Avramidi
Title: On a rational analogue of a conjecture of SingerSpeaker: Grigori Avramidi (University of Utah)Abstract: For a closed manifold M with contractible universal cover, the Singer conjecture predicts that the L^2-Betti numbers of M are concentrated in the middle dimension. In this talk, I will show that there is a closed manifold with rationally acyclic universal cover whose L^2-Betti numbers are not concentrated in the middle dimension.Seminar URL: https://research.math.osu.edu/ggt/
Cockins Hall 240
OSU ASC Drupal 8
ascwebservices@osu.edu
America/New_York
public
Date Range
Add to Calendar
2015-05-12 13:50:00
2015-05-12 14:45:00
Geometric Group Theory Seminar - Grigori Avramidi
Title: On a rational analogue of a conjecture of SingerSpeaker: Grigori Avramidi (University of Utah)Abstract: For a closed manifold M with contractible universal cover, the Singer conjecture predicts that the L^2-Betti numbers of M are concentrated in the middle dimension. In this talk, I will show that there is a closed manifold with rationally acyclic universal cover whose L^2-Betti numbers are not concentrated in the middle dimension.Seminar URL: https://research.math.osu.edu/ggt/
Cockins Hall 240
Department of Mathematics
math@osu.edu
America/New_York
public
Title: On a rational analogue of a conjecture of Singer
Speaker: Grigori Avramidi (University of Utah)
Abstract: For a closed manifold M with contractible universal cover, the Singer conjecture predicts that the L^2-Betti numbers of M are concentrated in the middle dimension. In this talk, I will show that there is a closed manifold with rationally acyclic universal cover whose L^2-Betti numbers are not concentrated in the middle dimension.
Seminar URL: https://research.math.osu.edu/ggt/
