Grothendieck-Teichmüller Groups, Deformation and Operads Cambridge University
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- Education
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Grothendieck-Teichmüller theory goes back to A. Grothendieck's celebrated Esquisse d'un programme. In 1991, V. Drinfel'd formally introduced two Grothendieck-Teichmüller groups, the former one related to the absolute Galois group and the latter one related to the deformation theory of a certain algebraic structure (braided quasi-Hopf algebra). Introduced in algebraic topology 40 years ago, the notion of operad has enjoyed a renaissance in the 90's under the work of M. Kontsevich in deformation theory. Two proofs of the deformation quantization of Poisson manifolds, one by himself as well as one by D. Tamarkin, led M. Kontsevich to conjecture an action of a Grothendieck-Teichmüller group on such deformation quantizations, thereby drawing a precise relationship between the two themes.
Read more at: http://www.newton.ac.uk/programmes/GDO/
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A lower bound of a sub-quotient of the Lie algebra associated to Grothendieck-Teichmüller group
Enriquez, B (University of Strasbourg)
Thursday 18 April 2013, 16:00-18:00 -
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Finite multiple zeta values
Zagier, D (Max-Planck-Institut fur Mathematik, Bonn and College de France)
Thursday 18 April 2013, 14:00-16:00 -
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Grothendieck-Teichmuller Groups in the Combinatorial Anabelian Geometry
Hoshi, Y (Kyoto University)
Friday 12 April 2013, 11:00-12:00 -
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Elliptic Grothendieck-Teichmueller theory
Schneps, LC (Institut de Mathématiques de Jussieu)
Friday 12 April 2013, 09:30-10:30 -
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Polylogarithms, Multiple Zeta Values and Superstring Amplitudes
Schlotterer , O (University of Cambridge)
Thursday 11 April 2013, 15:00-16:00 -
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Proof of the zig-zag conjecture
Schnetz, O (Friedrich-Alexander-Universität Erlangen-Nürnberg)
Thursday 11 April 2013, 13:30-14:30