The book Quasielliptic Equations in an Infinite Cylinder by Boris Sternin is a deep and fascinating study in the field of mathematical physics and the theory of differential equations. This work will be especially interesting to those who are fond of mathematics, physics and engineering sciences, as well as students and graduate students engaged in scientific research in these areas. In this book, the author immerses the reader in the world of quasi-elliptic equations, which play a key role in various applications, from mechanics to the theory of thermal conductivity. Sternin masterfully explains complex concepts, making them accessible to understanding. He uses the infinite cylinder as the basic geometric model, which allows him to consider many different aspects of equations, their properties and solutions. The reader will be able to see how these equations are applied to describe real physical processes, which gives the book practical value. The topics raised in the book cover a wide range of issues, including the existence and uniqueness of solutions, as well as their sustainability. Sternin not only describes mathematical methods, but also discusses their physical interpretations, making the text particularly attractive to those seeking to understand how abstract mathematical concepts are applied in the real world. This work not only expands the horizons of the reader in the field of theoretical mathematics, but also inspires further study and research. The book will be of interest not only to professional mathematicians and physicists, but also to senior students, graduate students, as well as teachers who are looking for quality materials for their lectures. If you are interested in mathematics, physics or engineering, then this work will be a real find for you. It will help to deepen your knowledge and expand your understanding of quasi-elliptic equations and their application. The style of Boris Sternin is clear and logical, which makes his work available to a wide audience. He is known for his research in mathematical physics and differential equations, and in this book he continues the tradition of in-depth analysis and accurate presentation. Readers familiar with his other works will appreciate his ability to explain even the most complex topics in a simple and understandable language. If you are looking for books on mathematics and physics that will help you understand complex concepts and expand your knowledge, Quasielliptic Equations in an Infinite Cylinder will be an excellent choice. This book will not only enrich your intellectual baggage, but also inspire new research and discoveries. Read, explore and discover the amazing world of mathematics and physics together with Boris Sternin!