Lecture Room 1 (INI) 2008-06-02 17:00: Maps and Graphs on Surfaces (Professor C Thomassen (Technical University of Denmark)) 2009-05-11 17:00: Langlands' functorality viewed as a kind of function theoretic Poisson formula problem (Prof. L. Lafforgue, IHES) 2009-05-18 17:00: QRT maps and elliptic surfaces (Prof. J.J. Duistermaat, Utrecht)