This article focuses on the development of the system economic theory based on the system paradigm formulated by J. Kornai and the space-time approach, both of which combined open new perspectives in the economic analysis of real objects. From this standpoint each economic system has two groups of dimensional characteristics – spatial and temporal, which determine its natural boundaries. Therefore, all economic systems may be divided into four classes: object, environment, process and project systems. Stylized production functions of different economic system types are presented. It is shown that in the process of functioning and exchanging of primary (basic) resources the four types of systems are connected into stable complexes – tetrads....