In this lecture I will explain the moment-weight inequality, and
its role in the proof of the Hilbert-Mumford numerical criterion
for $\mu$-stability. The setting is Hamiltonian group actions on
closed Kaehler manifolds. The major ingredients are...
Previous studies of kinetic transport in the Lorentz gas have
been limited to cases where the scatterers are distributed at
random (e.g. at the points of a spatial Poisson process) or at the
vertices of a Euclidean lattice. In this talk I will...