Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... Several arithmetic and geometric information of $A$ can be deduced from the analytic properties of its zeta function $\zeta(A;s)=\sum_{m\in A}' q(m)^{-s}$; more precisely from its meromorphic continuation, the distribution of its poles, etc.. ...