Volume 1. Polysystem paradigm in the dynamics of economic cycles The monograph is the result of many years of work by the author on the study of the nature of the cyclical nature of economic dynamics, which are reflected in his monographs and articles. In the presented study, particular importance is given to a systematic approach to determining the essence of the cyclical nature of economic dynamics, which contributes to the establishment of the content of evolutionary processes and the laws of the formation and development of economic systems.