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The works of these three authors have fostered my understanding of the essence and tasks of real economic science, as well as the desire to develop their ideas and concepts using the modern scientific probabilistic method of research. My primary task has been the creation of a mathematical apparatus adequate to the physical method and its use for the calculation of real economic systems. A similar process occurred during the creation and rapid rise of physical science, due to the creation of a powerful mathematical apparatus. It began with the discovery of the equations of motion and differential calculus.
The probabilistic method has long been applied at the empirical level in economic research by using the basic formulas of probability theory. The use of the probabilistic method in economics used an analogy with quantum mechanics of physical multiparticle systems [Kondratenko, 2005, 2015], and broadly pushed forward the framework of ideas and conceptions about the modern economic world. It gave rise to a new, probabilistic style of scientific economic thinking and created a new, dynamic probabilistic picture of the modern economic world. This veered away from the traditional static ideas of the economic mainstream, including neoclassical economic theory. This monograph solves the problem of this approachs practical application to specific economic systems, or exchanges. There is enough input data in the form of supply and demand quotations for quantitative study, as well as enough relevant, experimental data in the form of market prices and trade volumes to verify the theory.
Probability economics is built in terms of probability distributions. These are usually accepted in various scientific fields; primarily in physics, in areas such as statistical and quantum physics. Emphasized here is that probability distributions create the basis and language of the probabilistic method used to study complex dynamical systems. The way in which real markets could be quantitatively described using methods of probability economics was demonstrated earlier [Kondratenko, 2005, 2015] using examples of small model commodity economies. Our work has succeeded in achieving the following goal: to create the foundation of the exchanges theory. Based on probability economics, it overcomes the disadvantages of the modern theory of finance described earlier, and results are in good agreement with the respective experimental exchange data.
The microscopic theory developed in this work is devoted to the study of various exchange structures and processes at the level of exchange agents, and more precisely, at the level of actions of individual exchange agents. By this we mean the mechanisms of formation of exchange microstructures, such as temporal price and trade volume fine structure which depending on the quotations of market agents at each particular time. This theory gives a microscopic view of exchanges and exchange phenomena.
Our book will show how probability economics gives a reasonably accurate, microscopic description of the exchange phenomena. Regularities and patterns are derived from the detailed structures and mechanisms of work, found in the formation of prices and trade volumes.
We emphasize that for the purposes of this study there is no difference between stock, commodity and other exchanges. The theory being developed is equally suitable for describing any exchange, so henceforth we will use the term stock exchanges, or simply exchanges. As the main example for the study, several days of intraday dynamics occurring between 2013 and 2020 were chosen of Sberbank shares, Brent crude oil futures («Brent futures») and US dollars on the Moscow Exchange (MOEX) in Moscow.
The quotations of exchange agents used in this case are available on the MOEX website for a small fee, so all the numerical results of this work and its conclusions can be easily verified by other researchers. In addition, the intraday dynamics of Brent futures for several days of 2020 on the Intercontinental Exchange Futures Europe (ICE) in London were similarly studied.
The book is written in the form of a research report, as it presents the results of practical application of the original economic theory. This was developed earlier by the author, specifically to quantitatively solve the direct problem for the exchange markets that were described earlier. As far as we know, there are no other documented studies of this type. For this reason, the book does not provide a detailed overview of the history of the issue, and references are made only to works whose results were used in the development of this theory. Moreover, hundreds of books and articles on econophysics and physical economics have been published relatively recently [Mantegna et al., 1999; Chernavsky D. et al., 2002; Farmer et al., 2005; Richmond et al., 2013; Ippoliti and Cheng (eds.), 2017], as well as articles by David Orrell, for example [(Orrell, 2020]. Together, the latter can be seen as an excellent modern overview of the application of theoretical physics methods used to describe economic phenomena.
Bear in mind that when basing a new economic model that resembles of one from physics, it is useful to employ the latter during the initial stage to help name and define new concepts. We have done so in this book by establishing parallels between the economic many-agent systems, and many-particle systems from physics. This applies, for example, to such terms as microscopic and macroscopic theories, direct and inverse problems, equations of motion, etc. Time will tell which of these new concepts and terms will take root in economics.
In conclusion, we summarize the monograph with a subjective assessment of the results obtained and the conclusions of the study. This monograph presents the basics of the probabilistic theory of exchanges, based on probabilistic economic theory using agent quotations provided by exchanges. By its nature, this exchange theory is microscopic, so its analytical and numerical methods make it possible to calculate and describe various exchange microstructures and microprocesses.
Calculations of this kind, first performed in this study, are also published for the first time in this monograph. Particular attention has been paid to the calculation of market prices and trade volumes of various assets (Sberbank shares, futures for Brent crude oil, US dollars) on the MOEX and ICE (Brent crude oil futures) during one trading session, along with a detailed comparison of the theoretical results with the corresponding experimental data. This comparison demonstrates a good agreement between the theory and experiment, which allows us to assert that the main scientific problem of this study is solved in the monograph. We demonstrate that probabilistic economic theory finds its experimental confirmation and thereby acquires a solid experimental justification. This radically distinguishes it from several other economic theories that have a heuristic or empirical character.
Another important task is also solved here, namely, the economic mechanism underlying the formation of market prices and trade volumes. This is described in detail and serves as a bridge connecting the microscopic economic world with the macroscopic economic world. The formation process of the macrocosm from the microcosm is hereby demonstrated. We show how the action and time dynamics of the exchange market as a whole are formed from the actions of exchange agents. A new, universal system of stock indices of assets, exchanges and the global system of exchanges has also been developed.
Similarly, a strategy has been developed for digitalization, forecasting and management of a countrys and the worlds economy. This is based on digital platforms used to accumulate the plans of economic agents, processing them using the formulas of probabilistic economic theory. If implemented, these will in turn improve the quality of public economic administration of the country, and the world.