Joint Colloquium to be held on July 07, 2014
Date: July 7, Mon.
Time: 16:00-18:15
Venue: Kawai Hall, Mathematical Institute, Tohoku University (MAP H-31)
16:00-17:00
Speaker : Prof. A. Veselov（Loughborough University）
Title: From hyperplane arrangements to Deligne-Mumford moduli spaces: Kohno-Drinfeld way
Abstract: Gaudin subalgebras are abelian Lie subalgebras of maximal dimension spanned by generators of the Kohno-Drinfeld Lie algebra t_n, associated to A-type hyperplane arrangements. It turns out that Gaudin subalgebras from a smooth algebraic variety isomorphic to the Deligne-Mumford moduli space \bar M_{0,n+1} of stable genus zero curves with n+1 marked points. A real version of integrable n-dimensional tops and separation coordinates on the unit sphere in terms of the geometry of Stasheff polytope.
17:15-18:15
Speaker: Prof. Yoshiaki Maeda (Tohoku Forum for Creativity, Tohoku University)
Title: Wodzicki Chern-Simons class for loop spaces
Abstract: The loop space of a Riemannian manifold has a family of metrics depending on a Sobolev space parameter. The Levi-Civita connections for this family gives Chern-Simons forms on loop spaces. Using this Chern-Simons form, we give some examples of a manifold M whose the fundamental group of Diff(M) is infinite.
18:15-20:15
Reception at AOSIS, Aobayama Campus
* Mini-workshop will be held prior to the Joint Colloquium.
Time: 10:30-12:00
Venue: Mathematical Building 201, Tohoku University (MAP H-33)
Speakers: Takao Yamazaki, Yosuke Saito
(15:30- Tea Time)
Hosted by Mathematical Institute, RCPAM, WPI-AIMR
Link (Japanese page): www.math.tohoku.ac.jp/research/colloquium.html
PDF: (Poster)