21 Apr 2004; Mat-Nat Faculty (UITO), room U7. Wednesday 12:15-14:00

Martin Rypdal "Topological entropy for piecewise affine maps"

I will review a paper of J. Buzzi on the topological entropy of affine expanding maps. I will show how the ideas of this paper can be applied to to the Zhang model of SOC, and I will show that the topological entropy of the Zhang model is log(N) if the SRB-measure is not supported on singularities.