Fall    1989

September 6  Organizational Meeting

September 13 Marzio Cassandro: Tree graph expansions -- a rigorous 
                               renormalization scheme
 
September 20 Charles Radin: Dyanmical systems and ground states

September 27 Hans Koch: A scaling limit for the Hopfield dynamics

October 6 E. Eugene Wayne (Penn State): Thermodynamic limit for Lyapunov 
                          exponents of symplectic matrices and applications to
                          systems of oscillators

October 11 Amadeo Delshams: Effective stability of Hamiltonian systems near
                            elliptic points

October 18 C. Falcolini (Rome): Sharp estimates for stability parameters in
                        periodically forced non-linear systems

October 25 Marzio Cassandro: A random walk in a random medium

November 8 Takashi Hara: Mean field critical behavior for self-avoiding walks
                         (percolation, lattice animals) in high dimensions

November 15 Michael Marder: About cracks and plates

November 29 Rafael de la Llave: Whiskered and lower dimensional tori in nearly
                                integrable dynamical sytems

December 6 C. Fefferman (Princeton University): to be announced

December 11 Giovanni Gallavotti (Rome): Fermi surface: Renormalization group 
                                point of view