The book "All Higher Mathematics, Volume 7" by Mikhail Lvovich Krasnov and his co-authors is not just a textbook, but a real encyclopedia of knowledge, which will become an indispensable assistant for students, graduate students and anyone who seeks to understand the world of higher mathematics more deeply. This volume continues a series devoted to various aspects of mathematical science and offers the reader an in-depth study of topics that are fundamental to the further development of more complex mathematical concepts. The seventh volume deals with such important sections as the theory of functions, complex analysis and elements of functional analysis. Each chapter is imbued with logic and consistency, which allows the reader not only to assimilate the material, but also to apply it in practice. The book is written in an accessible language, which makes it suitable for both students and teachers who want to refresh their knowledge or prepare for classes. For whom is this book intended? First of all, it will be of interest to students of mathematical and technical specialties, as well as to everyone who is fond of mathematics and wants to expand their horizons . If you are a future engineer, physicist or programmer, then “All Higher Mathematics, Volume 7” will become your faithful companion in the world of numbers and formulas. In addition, the book can attract the attention of teachers who are looking for quality materials to prepare for classes and exams. The topics raised in this volume are diverse and relevant. The authors not only explain the theoretical aspects, but also give many examples and tasks that will help the reader to consolidate the knowledge gained. The discussion of functions and their properties, as well as the application of complex analysis in various fields of science, opens new horizons for understanding complex mathematical concepts. It is important to note that the book not only presents material, but also encourages the reader to think, which makes the learning process more exciting and productive. The style of Mikhail Lvovich Krasnov and his colleagues is clear and logical. They are able to explain complex things in simple language, which makes their work available to a wide audience. Krasnov is the author of several other well-known works, including "All Higher Mathematics" in general, as well as many articles and textbooks that have won recognition among both students and teachers. His approach to teaching and explaining mathematical concepts makes him one of the leading authors in the field. Among the search queries that can lead the reader to this book are: "higher mathematics for students", "textbook on complex analysis", "mathematics for engineers", "function theory", and "mathematical problems and examples". These queries emphasize that the book covers a wide range of topics that interest both students and professionals. “All Higher Mathematics, Volume 7” is not just a book, but a whole world in which the reader plunges into, opening up new horizons of knowledge. This work will be your reliable assistant on the way to mathematical mastery, and perhaps it will inspire you to further research and discoveries in this fascinating science. Do not miss the opportunity to become part of this amazing journey into the world of higher mathematics!