2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/115004Two Lyapunov functionals are presented for the Enskog equation. One is to describe interactions between particles with various velocities and another is to measure the $L^1$ distance between two classical solutions. The former yields the time-asymptotic convergence of global classical solutions to the collision free motion while the latter is applied into the verification of the $L^1$ stability of global classical solutions.13 pagesMathematical PhysicsStatistical MechanicsFluid Dynamics76P05; 35Q75; 82-02text