The book "Analytical functions of a complex variable", written by well-known mathematicians and. A. Aleksandrov and V. In. Sobolev is a fascinating and in-depth study of one of the most exciting areas of mathematics complex analysis. This work not only serves as a study guide for undergraduate and graduate students studying mathematics, physics, and engineering, but is also a valuable resource for professionals working in related fields. The authors focus on analytical functions that play a key role in the theory of complex variables. The book covers a wide range of topics, ranging from the basics of complex analysis to more complex concepts such as the Cauchy theorem, integrals, and series. The authors strive to make the material accessible and understandable, while not losing sight of its depth and complexity. The reader will be able not only to get acquainted with the theoretical aspects, but also to see how these ideas are applied in practice. The book will be of interest to both undergraduate and graduate students who want to deepen their knowledge in the field of mathematical analysis. In addition, it will be useful for teachers who want to find new approaches to explaining complex topics. If you are passionate about mathematics, physics or engineering, then this publication will become your reliable companion in the study of analytical functions. One of the key themes of the book is the relationship between analytic functions and their geometric properties. The authors emphasize how complex functions can be used to describe various physical phenomena, such as waves and vibrations. This makes the book particularly relevant for those interested in real-life applications of mathematics. Readers will be able to see how abstract mathematical concepts can be used to solve practical problems. The writing style of Alexandrov and Sobolev is clear and logical. They skillfully combine theory with practical examples, which makes the material more accessible to perception. The authors are not afraid to delve into complex topics, but at the same time try to explain them in simple and understandable language. This makes the book ideal for both self-study and for use in the learning process. In addition, it is worth noting that . A. Alexander and B. In. Sobolev is an author known for his other significant work in mathematics. Their experience and in-depth knowledge in this area give the book added value. Readers familiar with their other works can expect the same level of quality and depth as in "Analytic Functions of a Complex Variable" The book also raises important philosophical questions about the nature of mathematics and its role in our understanding of the world. The authors not only present facts and theorems, but also encourage the reader to think about how mathematics can explain complex phenomena and how it is related to other sciences. This makes reading not only informative, but also inspiring. In conclusion, “Analytical functions of a complex variable” is not just a textbook, but a real find for anyone who wants to deepen their knowledge in the field of complex analysis. This book will be a valuable addition to the library of anyone interested in mathematics, physics or engineering. If you are looking for a quality and exciting reading that will expand your horizons and give new tools for solving problems, then this publication should definitely be on your shelf.