Past Special Lecture

20 June 2011
Professor Sir Vaughan Jones

Abstract: In the 1990's Haagerup discovered a new subfactor, and hence a new topological quantum field theory, that has so far proved inaccessible by the methods of quantum groups and conformal field theory. It was the subfactor of smallest index beyond 4. This led to a classification project-classify all subfactors to as large an index as possible. So far we have gone as far as index 5. It is known that at index 6 wildness phenomena occur which preclude a simple listing of all subfactors of that index. It is possible that wildness occurs at a smaller index value, the main candidate being approximately 5.236.



23 November 2010
Zhiwei Yun
<!-- p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 24.0px 'Times New Roman'} --> <p class="p1">Introduce the parabolic Hitchin fibration, construct the affine Weyl group action on its fiberwise cohomology, and study one example.</p>