A Course of Lectures and a Workshop on the Theory of Functions of a Complex Variable by N. A. Mikulika is not just a textbook, but a real find for students, graduate students and anyone interested in mathematics at a deeper level. In this work, the author masterfully combines theory and practice, offering readers not only an extensive presentation of the basics of complex analysis, but also a variety of tasks that will help consolidate the knowledge gained. What is the theory of functions of a complex variable? This is the field of mathematics that studies functions that accept complex numbers as variables. Unlike real functions, complex functions open completely new horizons for researchers, allowing a deeper understanding of the nature of mathematical phenomena. Mikulik’s book covers all key aspects of this theory, from the basics to more complex concepts such as analytic functions, integrals, and Cauchy theorems. One of the main features of the book is its accessibility. N. A. Mikulik uses clear and logical language, which makes the material understandable even for those who are just beginning to get acquainted with this topic. Each section of the book is accompanied by examples and tasks that will help readers not only to learn the theoretical aspects, but also to apply them in practice. This is especially important for students who are preparing for exams or research. The book will be of interest not only to students of mathematical and physical and mathematical faculties, but also to teachers, graduate students and anyone who wants to deepen their knowledge in the field of complex analysis. It is suitable for both self-study and as a teaching tool for group classes . If you are looking for high-quality literature on mathematics that will help you understand complex concepts and teach you how to apply them in practice, then the “Lecture Course and Workshop on the Theory of Functions of a Complex Variable” is exactly what you need. The topics raised in the book cover a wide range of issues, ranging from the basics of complex analysis to its applications in various fields of science and technology. Mikulik not only explains theoretical aspects, but also shows how they can be used to solve real-world problems. This makes the book especially valuable for those who want to see the practical application of the material being studied. The author's style is clear and logical, which allows the reader to easily follow the course of thought. N. A. Mikulik is an experienced teacher and researcher who knows how to convey complex ideas to the audience. His other works are also noteworthy, and if you enjoy this course, you will be able to find many other interesting and useful publications in his bibliography. In conclusion, "Lecture Course and Workshop on the Theory of Functions of Complex Variables" is not just a textbook, but a whole world into which you immerse yourself, studying one of the most fascinating and deep areas of mathematics. If you want to expand your horizons, understand how complex functions work, and learn how to put them into practice, be sure to pay attention to this book. It will be your reliable companion in the world of complex analysis and will help you reach new heights in mathematics.