3:30PM: Quotients of unipotent groupsHarm DerksenActions of unipotent groups on affine variety are very different from actions of reductive groups. I will discuss nice examples as well as pathological examples of unipotent group actions and quotients. I will also discuss joint work with Gregor Kemper on an algorithm for invariant rings of unipotent groups.

5:00PM: Geometric Igusa integralsYuri TschinkelI will describe geometric approaches to the computation of Mellin transforms of local heights and related padic oscillatory integrals and discuss applications to analytic and adelic geometry. This is joint work with A. ChambertLoir.
