Giovanni Gallavotti
Entropy, Nonequilibrium, Chaos and Infinitesimals
(111K, latex)

ABSTRACT.  A survey of the approach to Statistical Mechanics 
following Boltzmann's theory of ensembles and ergodic hypothesis 
leading to chaoticity as a unifying principle of equilibrium and 
nonequilibrium Statistical Mechanics. (Source of the talk at the ESI 
Symposium on "Boltzmann's legacy", Vienna, 6-9 June, 2006.