Mathematical Issues of Cybernetics . Issue 09”, prepared by the team of authors, is a fascinating and in-depth study in the field of cybernetics, which will be of interest to both specialists and those who are just beginning to get acquainted with this exciting science. This issue continues the tradition of previous volumes, offering readers fresh ideas and current research that can change the perception of the mathematical foundations of cybernetic systems. The book explores the key mathematical concepts underlying cybernetics, including control theory, dynamical systems modeling, and information processing algorithms. Authors, each of whom is an expert in their field, share their knowledge and experience, which makes the material accessible and understandable even for those who do not have deep mathematical knowledge. However, despite the availability, the book does not lose in complexity and depth, which makes it interesting for professionals working in the field of cybernetics, computer science and system analysis. Who can like this book? First of all, it will be useful for students and graduate students of technical and mathematical specialties, as well as teachers who are looking for quality materials for their courses . Engineers working in the field of automation and robotics will also find a lot of useful information in it. In addition, the book can attract the attention of researchers involved in the theoretical aspects of cybernetics and mathematical modeling. Topics covered in the Mathematical Issues of Cybernetics cover a wide range of topics, from the fundamentals of control theory to the complex models used in modern systems. The authors discuss how mathematical methods can be applied to solve practical problems, such as process optimization, forecasting, and managing complex systems. This makes the book not only a theoretical work, but also a practical tool for applying knowledge in real life. The style in which the book is written is clear and logical. The authors seek to explain complex concepts in simple language, which allows the reader to easily absorb material. Each section includes examples and illustrations that help to better understand the ideas presented. This makes "Mathematical Issues of Cybernetics. Issue 09" not only useful, but also fascinating reading. If you are looking for books on cybernetics, mathematics or systems analysis, then this issue will be a great addition to your library. It may be comparable to works such as Norbert Wiener's Cybernetics: or Control and Communication in Animal and Machine, or A.'s System Analysis and Control. A. Pugacheva . These books, like The Mathematical Questions of Cybernetics, open doors to a world of complex and interesting ideas that can change your understanding of technology and its interaction with mathematics. In conclusion, “Mathematical issues of cybernetics . Issue 09" is not just a collection of articles, but a real find for anyone interested in cybernetics and mathematical methods. This book is able to inspire, give new ideas and deepen understanding of the complex processes taking place in the modern world. Do not miss the opportunity to immerse yourself in the world of cybernetics and discover new horizons of knowledge!