Theoretical Mechanics : Elements of Variational Calculus and Optimal Control" is a unique publication created by a team of authors that offers readers a deep immersion in the world of mechanics and mathematical methods used to solve complex problems in various fields of science and technology. This is not just a textbook, but a real find for students, graduate students and specialists seeking to expand their knowledge in the field of mechanics and optimization. From the first pages of the book, the reader plunges into the fascinating world of theoretical mechanics, where the authors explain with clarity and accessibility the complex concepts of variational calculus and methods of optimal control. These topics are fundamental to understanding the dynamics of systems and processes, making the book particularly relevant to engineers, physicists, and mathematicians. The book covers a wide range of issues, ranging from the basics of mechanics to modern approaches to solving practical problems, which makes it useful for both theorists and practitioners. One of the key topics addressed in the book is variational calculus, which serves as a powerful tool for finding extremities of functionals. The authors explain in detail how to apply these methods to solve problems related to the movement of bodies, process optimization and even in the economy. The reader will be able to learn how to use variational calculus to find optimal trajectories of motion, which is of great importance in robotics, the aerospace industry, and many other areas. The book also touches on aspects of optimal control, making it particularly interesting for those working in the field of automation and control. The authors share examples from real practice, showing how theoretical knowledge can be applied to solve actual problems. This makes the material not only theoretically significant, but also practically useful. Who can like this publication? First of all, it will be of interest to students of technical specialties, graduate students and teachers, as well as anyone who is interested in mechanics and mathematical methods . The book is suitable for readers with different levels of training, as the authors try to explain complex concepts in a simple and accessible language, which makes the material understandable even for those who are just beginning to get acquainted with this topic. The style of the authors is clear and logical, which makes it easy to digest the material. They use many examples and illustrations, which makes the learning process more exciting and visual. In addition, the book contains tasks for independent solution, which contributes to the consolidation of the knowledge gained and the development of analytical thinking. This book will be an excellent addition to the library of anyone who seeks to understand the basics of theoretical mechanics and its application in real life. Whether you’re looking for literature on calculus, optimal control, or just want to deepen your knowledge of mechanics, “Theoretical Mechanics: Elements of calculus and optimal control” is exactly what you need. Do not miss the opportunity to discover a world where mathematics and physics combine to solve the most complex problems of our time.