The Concept of Economic Equilibrium in Spatial Systems
Interregional integration is the most important property and form of manifestation of the unity of any economic space, in particular Russian. The study of this phenomenon is a significant area of research on the spatial development of the country. In the article the historical preconditions of the used approaches based on the theory of economic equilibrium have been studied and systematized. We have described and analyzed various forms of spatial economic equilibrium which are adequate to the modern level of development and mathematical representation of economy. The development of the concept of economic equilibrium in economic and mathematical models is presented. It is shown that the simplicity of the mathematical structure of the OMIOM allows, using all the concepts of economic equilibrium, to analyze the features of interregional economic interactions and assess the degree of economic interdependence of the regions of Russia. The economic space in the OMIOM is presented discretely, in the context of macro-regions, which are federal districts or their large fragments, uniting several subjects of the federation. The economy of each macroregion is presented in the context of the aggregated sectors of production of goods and services. For sectors with transportable products, interregional transport and economic ties are taken into account.