[geometry-ml:00749] Seminar at IPMU on Nov 20

[Satoshi Kondo]

Dear colleagues,

I should be pleased to announce the following seminar at IPMU
(the Institute for the Physics and Mathematics of the Universe).

Regards,

Satoshi Kondo(IPMU)

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Date: November 20, 2008, 15:30 - 17:00

Place: Seminar Room at IPMU Prefab. B, Kashiwa Campus of the University of Tokyo

Speaker: Nicolai Reshetikhin (UC Berkeley & Amsterdam)

Title: Quantum groups at roots of unity and invariants of links

Abstract: Quantized universal enveloping algebras specialized at a
primitive $\ell$-th root of unity has a large central Hopf subalgebra
generated by $\ell$-th powers of Cartan subalgebra and
of root elements. This talk will start with an overview of some basic
facts about quantized $sl_2$ at roots of unity and its braiding
properties. Then it will be used to construct invariants
of links with the gauge class of generic $sl_2(C)$ flat connection
in the complement. At the end the limit $\ell\to \infty$ will be discussed.
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Please notice that the seminar will be held at the "Prefab" of IPMU.
It is located at the next of the prefab of "Frontier Sciences,
Computational Biology"
(情報生命科学実験棟).
You can check the location from

http://www.ipmu.jp/access/img/KashiwaCampusMap.png

The schedule of the seminar can be checked from

http://www.ipmu.jp/seminars/