# Bassam Fayad: On stability of elliptic fixed points and tori in Hamiltonian dynamics

**Time:
**
Wed 2017-11-15 13.15

**Lecturer: **
Bassam Fayad, CNRS, IMJ-PRG

**Location: **
F11

We discuss the stability (or instability) of an equilibrium in Hamiltonian dynamics from various points of view: the classical Lyapunov stability or topological stability, the stability from a probabilistic point of view addressed by KAM theory, or the effective stability that measures the time spent by solutions that start close to the equilibrium in a neighborhood of the equilibrium.

This is an analysis colloquium style talk.