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SUMMARY:A line in the plane and the Grothendieck-Teichmueller group - Merk
 ulov\, S (Stockholm University)
DTSTART:20130110T153000Z
DTEND:20130110T163000Z
UID:TALK42359@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:The Grothendieck-Teichmueller group (GT) appears in many diffe
 rent parts of mathematics: in the theory of moduli spaces of algebraic cur
 ves\, in number theory\, in the theory of motives\, in the theory of defor
 mation quantization etc. Using recent breakthrough theorems by Thomas Will
 wacher\, we argue that GT controls the deformation theory of a line in the
  complex plane when one understands these geometric structures via their a
 ssociated operads of (compactified) configuration spaces. Applications to 
 Poisson geometry\, deformation quantization\, and Batalin-Vilkovisky forma
 lism are discussed. \n
LOCATION:Seminar Room 2\, Newton Institute Gatehouse
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