Date: 7 December 2012, 4:30pm
Location: Hempfield High School, Room 213
 Speaker: Vasily Dolgushev, Temple University
   Title: A manifestation of the Grothendieck-Teichmueller group in geometry

Abstract.  Inspired by Grothendieck's lego-game, Vladimir
Drinfeld introduced, in 1990, the Grothendieck-Teichmueller group GRT.
This group has interesting links to the absolute Galois group of
rationals, moduli of algebraic curves, solutions of the Kashiwara-Vergne
problem, and theory of motives. My talk will be devoted to the
manifestation of GRT in the extended moduli of algebraic varieties,
which was conjectured by Maxim Kontsevich in 1999.
 
My talk is based on a joint paper with Chris Rogers and Thomas Willwacher.