The system with discrete interactions I: Some comments about the principles of quantum theory

The model of the physical system with discrete interactions is considered. The model is based on the postulates that: (i) parameters of the physical system are defined in process of its interaction; (ii) the process of interaction is discrete. The model gives an essential way to introduce all basic notions and obtain the results of the quantum theory, in particular the operator formalism of the theory, to derive the meaning of the main physical parameters, such as momentum or electric charge, according to characteristics of behavior of the system. Based on the proposed postulates, Schrödinger equation for the particle is deduced in a way similar to inferring of Smoluchowski equation in the classical statistical mechanics. The equations of motion of linear fields are established in the similar way.