The Poincaré profile of a graph or group

55 mins 21 secs,  695.77 MB,  WebM  640x360,  29.97 fps,  44100 Hz,  1.67 Mbits/sec
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Description: Mackay, J (University of Bristol)
Thursday 6th April 2017 - 10:00 to 11:00
 
Created: 2017-04-13 17:14
Collection: Non-Positive Curvature Group Actions and Cohomology
Publisher: Isaac Newton Institute
Copyright: Mackay, J
Language: eng (English)
Distribution: World     (downloadable)
Explicit content: No
Aspect Ratio: 16:9
Screencast: No
Bumper: UCS Default
Trailer: UCS Default
 
Abstract: Benjamini, Schramm and Timar introduced the notion of "separation profile" for a graph or finitely generated group. I will discuss a family of invariants that generalise this idea, examples of the values obtained and applications to non-embedding results. Joint work with David Hume and Romain Tessera.
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