The Book of Mathematics . Differential equations in partial derivatives”, written by a team of authors under the guidance of I. About. Alexandrova, represents a significant contribution to the field of mathematical literature. This publication not only deepens the understanding of partial differential equations, but also opens the door to a world of complex mathematical concepts that have practical applications in various scientific and engineering disciplines. The book focuses on differential equations that describe a variety of physical processes, from heat propagation to fluid dynamics. The author's team offers the reader not only theoretical material, but also practical tasks that will help to consolidate knowledge and develop skills in solving equations. This makes the book especially useful for undergraduate and graduate students of technical and natural sciences specialties, as well as for teachers who are looking for quality teaching materials. The book begins with the basics, gradually introducing the reader to more complex topics. Each chapter contains clear explanations, examples, and tasks that make it easy to digest information. The intriguing approach of the authors is that they are not afraid to delve into complex aspects, focusing on the relationship between the various sections of mathematics and their application in the real world. This creates a sense of integrity and logic, which is especially important for understanding such a complex topic as partial differential equations. Who can like this edition? First of all, the book will be of interest to senior students and graduate students studying mathematics, physics, engineering and other technical sciences . It is also suitable for teachers who want to enrich their lectures with relevant examples and tasks .. Due to the available presentation language and clear structure, the book can be useful for those who just want to expand their knowledge in mathematics, regardless of their level of training. The topics raised in the book cover a wide range of issues, such as methods for solving linear and nonlinear equations, the application of transformations, and numerical methods. The author's team emphasizes the importance of understanding not only the theory, but also the practical application of the knowledge gained. This is especially true in the modern world, where mathematical models are used to solve real problems in science and technology. The style of the authors is clear and logical, which makes the material available for perception. They skillfully combine theory with practice, which allows the reader not only to understand, but also to apply the knowledge gained. The Book of Mathematics . Differential Equations in Private Derivatives” will become a reliable assistant in study and scientific work, as well as a source of inspiration for those who seek to understand the world of mathematics more deeply. If you are looking for a quality differential equation tutorial that combines theory and practice, this edition will be an excellent choice. It will not only help you master complex concepts, but also inspire you to further study mathematics and its applications in various fields. Do not miss the opportunity to immerse yourself in the fascinating world of differential equations with the book E. About. Aleksandrova and his colleagues!