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Bogoliubov–Born–Green–Kirkwood–Yvon hierarchy methods for sums of Lyapunov exponents for dilute gases
We consider a general method for computing the sum of positive Lyapunov exponents for moderately dense gases. This method is based upon hierarchy techniques used previously to derive the generalized Boltzmann equation for the time-dependent spatial and velocity distribution functions for such systems. We extend the variables in the generalized …