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The Poincaré profile of a graph or group

Presented by: 
John Mackay University of Bristol
Date: 
Thursday 6th April 2017 - 10:00 to 11:00
Venue: 
INI Seminar Room 2
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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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons