The book "Mathematical modeling of nonlinear thermohydrogasodynamic processes in multicomponent jet currents" by Holpanov L. P. and others is a unique and in-depth study that opens doors to the world of complex physical processes occurring in multi-component systems. This publication will be a real find for specialists in the field of hydrodynamics, thermodynamics and mathematical modeling, as well as for students and graduate students seeking to deepen their knowledge in these areas. The book examines key aspects of nonlinear thermohydrogasodynamic processes that play an important role in various industrial and scientific applications. The authors offer readers a detailed analysis of mathematical models that allow describing the behavior of jet streams consisting of several components. This is particularly relevant in areas such as energy, ecology and the chemical industry, where understanding the mixing and interaction processes of different phases is critical. The book not only immerses the reader in theoretical foundations, but also offers practical examples, which makes it especially valuable for those who work with real-world problems. The authors use a modern mathematical apparatus, including numerical methods and algorithms, which allows them to effectively model complex systems. The reader will be able to see how mathematical models are applied to solve urgent problems, such as the optimization of combustion processes, emissions management and the development of new technologies. This work will be of interest not only to professional researchers and engineers, but also to senior students studying mechanical and physical sciences. The book can be the basis for coursework and thesis, as well as a useful tool for preparing for exams . It will attract the attention of those who are interested in modern methods of research and modeling of complex systems, as well as those who strive for the practical application of theoretical knowledge. The topics raised in the book cover a wide range of issues related to the interaction of different phases in multicomponent currents, as well as nonlinear effects that may arise in such systems. The authors emphasize the importance of accurate modeling to achieve effective and sustainable solutions in various industries. The book also addresses environmental issues, emphasizing the need to develop cleaner and more efficient technologies, making it relevant in light of contemporary environmental challenges. The style of Holpanov and his colleagues is clear and accessible, which allows the reader to easily assimilate complex concepts and ideas. The authors strive to make their research as clear as possible, which is one of the key advantages of this work. In addition to his Mathematical Modeling of Nonlinear Thermohydrogasodynamic Processes, Holpanov is also known for his work in mathematical physics and applied mathematics, which adds value to his research. Therefore, ,:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ The book "Mathematical modeling of nonlinear thermohydrogasodynamic processes in multicomponent jet streams" is an important contribution to the scientific literature and is strongly recommended to all , who is interested in modern approaches to modeling complex physical processes. It will not only be a useful source of knowledge, but also an inspiration for future research and development.