Classical relativistic system of N charges. Hamiltonian description, forms of dynamics, and partition function

e algebra in the terms of particle variables is found. The relation between covariant and physical particle variables in the Hamiltonian description is written. The system of particles interacting by means of scalar and vector massive elds is also considered. The rst order approximation in is examined. An application to calculating the relativistic partition function of an interacting particle system is discussed.