Mechanism of irreversibility in a many-body systems
  The mechanism of irreversible dynamics in the mixing systems is constructed in the frames of the classical mechanics laws. The offered mechanism can be found only within the framework of the generalized Hamilton's formalism. The generalized formalism is created by expansion of the canonical Hamilton's formalism to the open systems. A formula, which expresses the entropy through the work of subsystems interaction forces was obtained. The essential link between thermodynamics and classical mechanics was established. 
V.M. Somsikov