Group for Research in Decision Analysis

# The upper half-planes

## Pierre Colmez – Director, National Center for Scientific Research (CNRS), France

The theory of ($$\varphi-\Gamma$$)-modules was developed by J.-M. Fontaine in order to study $$p$$-adic representations of Galois groups of local ($$p$$-adic) fields. We will explore its applications to other problems, in particular to GL$$_2$$-representations and the cohomology of $$p$$-adic varieties.

Free entrance.
Welcome to everyone!