Due to the dialectical analysis of fundamental economic categories, the market economy appears as a complex, nonlinear, functionally closed (but causally open) system of economic actions. Such systems have a number of unique properties that have been well studied in chaos theory, constructivism and second-order cybernetics. This allows for the study of economic processes to involve unique research and development of these fields in the format of interdisciplinary analysis. In this monograph, a mathematical model of general economic equilibrium (i.e. the model of the attractor) is proposed, for which a decentralised economy always strives towards by virtue of the immanent logic of the development of intrasystem processes (but never reaches it because of the permanent impact of natural and social environments).