Book 629 System Analysis and Operations Research: Part. Methods of systems research and development of mathematical models in fuzzy" by the authors Rykov A. C. and Orazbaeva B. B. is a deep dive into the world of system analysis and operations research methods. This work will become an indispensable assistant for students, graduate students, researchers and practitioners seeking to master modern approaches to solving complex problems in various fields of science and technology. The book discusses current methods of systems research, focusing on the development of mathematical models in conditions of uncertainty and fuzziness. The authors offer the reader a unique perspective on how system analysis can be used to optimize processes and decision-making in an environment where information is incomplete or contradictory. This makes the book especially useful for those who work in areas where it is necessary to make decisions based on incomplete data, such as economics, management, ecology and engineering. Who can like this book? First of all, it will be of interest to students of technical and economic specialties, as well as graduate students engaged in scientific research in the field of system analysis . Practitioners working in project management, business analytics or research will find in it many useful tools and techniques that will help them in their professional activities. The book will also be useful to those who are interested in modern approaches to modeling and optimization, and want to expand their knowledge of fuzzy systems. The topics raised in the book cover a wide range of issues related to systems analysis and operations research. The authors discuss in detail the methods that allow modeling complex systems, analyzing their behavior and finding optimal solutions. Particular attention is paid to fuzzy sets and logic, which allows for a more flexible approach to data analysis and decision-making. This book not only teaches theories, but also offers practical examples, which makes the material accessible and understandable. The style of the authors is distinguished by clarity and logical presentation, which allows the reader to easily assimilate complex concepts. Rykov A. C. and Orazbaev B. B. have significant experience in the field of system analysis and operations research, which gives their work additional value Their previous publications also deal with the subject of mathematical modeling and optimization, which confirms their expertise in this field. The book 629 System Analysis and Operations Research will be an excellent addition to the library of anyone who seeks a deep understanding of modern methods of analysis and optimization. It will not only expand the horizons of knowledge, but also equip the reader with the tools necessary for successful work in conditions of uncertainty. If you’re looking for quality systems analysis literature that combines theory and practice, this book will be your reliable guide to the world of mathematical modeling and fuzzy systems.