**SMS scnews item created by James East at Mon 23 Mar 2009 1244**

Type: Seminar

Distribution: World

Expiry: 27 Mar 2009

**Calendar1: 27 Mar 2009 1205-1255**

**CalLoc1: Carslaw 375**

CalTitle1: Algebra Seminar: Guilhot -- Semicontinuity properties of Kazhdan-Lusztig cells

Auth: jamese@pisa.maths.usyd.edu.au

### Algebra Seminar

# Semicontinuity properties of Kazhdan-Lusztig cells in affine Weyl groups of rank 2

### Guilhot

In this talk I will introduce the semicontinuity conjecture of Cedric Bonnafe concerning the behaviour of the Kazhdan-Lusztig cells when the parameters are varying. I will then describe the partition into cells of the affine Weyl groups of rank 2 and show that the semicontinuity conjecture hold in these cases.

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After the talk we will be taking the speaker to lunch at the Grandstand Bar.