= Poincaré recurrence theorem
{wiki=Poincaré_recurrence_theorem}
The Poincaré recurrence theorem is a fundamental result in the field of dynamical systems and ergodic theory, named after the French mathematician Henri Poincaré. The theorem essentially states that in a closed system where the dynamics are governed by deterministic laws and the system is confined to a finite volume, a system will eventually return to a state very close to its initial conditions after a sufficient amount of time.
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