Methods of Mathematical Physics . Part V. Problems for the equations of oscillation, thermal conductivity and stationary problems in a rectangle" is an outstanding work created by a team of authors, which will become an indispensable assistant for students, graduate students and teachers involved in mathematical physics and related disciplines. This publication continues the tradition of high-quality scientific analysis and practical application of mathematical methods in physics, providing readers with not only theoretical foundations, but also practical problems for a deep understanding of the subject. The book covers a wide range of topics related to the equations of oscillation and thermal conduction, as well as stationary problems in a rectangular region. It offers readers a unique opportunity to immerse themselves in the world of mathematical physics, where each section is built on logic and consistency, which makes the material available even to those who are just starting their way in this complex but fascinating field. Readers will be able to find here both classical problems and modern approaches to their solution, which makes the book relevant for study both within the educational process and for independent development. This book will be interesting not only for students and graduate students, but also for practicing engineers, physicists and mathematicians who are looking for new approaches to solving complex problems. It can also attract the attention of teachers who want to enrich their courses with new examples and tasks, as well as those who are interested in applied mathematics and physics. The age category of readers varies from high school students to adults seeking to expand their knowledge of science. The topics raised in the book cover critical aspects of mathematical physics, such as wave processes, heat transfer, and stationary states. These problems are not only relevant in theory, but also have practical applications in various fields of science and technology, including engineering, ecology, and even medicine. Readers will be able to understand how mathematical models help explain physical phenomena and how they can be used to solve real-world problems. The style of the authors is distinguished by clarity and accessibility of presentation, which allows readers to easily assimilate complex concepts. They use many examples and illustrations to demonstrate the application of theoretical knowledge in practice. This makes the book not only a tutorial, but also a real practical guide that can be used in everyday work. Methods of Mathematical Physics . Part V" is part of a larger series that covers various aspects of mathematical physics. If you are interested in such works as "Methods of mathematical physics" P. G. Kostyukova or "Mathematical Physics" A. N. Tikhonov, this edition will be for you a logical continuation of the study of this area . It is also ideal for those looking for tasks to prepare for exams or scientific conferences. In conclusion, "Methods of mathematical physics. Part V. The problems for equations of oscillation, thermal conductivity and stationary problems in a rectangle are not just a book, but a whole world in which you can immerse yourself to discover new horizons of mathematical physics. It will inspire you to study, help you overcome difficulties and give you the opportunity to apply the knowledge you have gained in practice. Do not miss the chance to become a part of this fascinating journey into the world of science!