Boltzmann-Grad limit
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Dr. Francois Golse accepted the invitation on 21 February 2009 (self-imposed deadline: 21 February 2010).
The Boltzmann-Grad limit is the asymptotic limit in which the Boltzmann equation of the kinetic theory of gases is derived from the N-body Hamiltonian dynamics governing the motion of gas molecules, assumed to interact by some short-range binary potential.
