Book 388 Methods of Mathematical Physics . H. 5. Problems for the equations of oscillation, thermal conductivity and stationary problems in rectangular areas” by the authors E. Guryanova and V. G. Clouds is a fascinating and in-depth study that immerses the reader in the world of mathematical physics, revealing the many nuances associated with solving the equations of oscillation and thermal conductivity. This publication will become an indispensable assistant for students, graduate students and teachers, as well as for anyone interested in applied mathematics and physics. The book covers a wide range of problems related to the equations of mathematical physics, and offers the reader not only theoretical foundations, but also practical examples that will help to better understand complex concepts. The authors carefully worked out the material so that the reader could not only get acquainted with the methods of solution, but also learn how to apply them in practice. Part 5 is devoted to problems that arise in rectangular areas, which makes it especially relevant for those involved in engineering sciences and applied physics. The topics raised in the book cover key aspects of oscillatory processes and thermal conductivity, making it useful for specialists in mechanics, thermodynamics, and other related disciplines. The reader will be able to learn about various methods, such as the method of separating variables, the method of integrating multipliers and others that will help him in solving both simple and complex problems. The book not only expands the horizons of knowledge, but also inspires further research in the field of mathematical physics. Who can like this publication? First of all, it will be interesting for students of technical and natural sciences specialties, as well as graduate students working on dissertations in the field of physics and mathematics . Teachers will find in the book a lot of useful materials for the preparation of lectures and seminars . In addition, the book can attract the attention of researchers involved in applied problems related to fluctuations and thermal conductivity .. The style of the authors is distinguished by clarity and logical presentation, which makes complex concepts accessible to understanding. Guryanov and Clouds are known for their work in the field of mathematical physics, and their experience allows them to present material in the most convenient and understandable form. In the previous parts of the series, they have already considered many topics, and this edition logically continues their research, deepening the reader's understanding of mathematical methods. Book 388 Methods of Mathematical Physics . H. 5" is not only a training manual, but also a real guide for practitioners. It will help readers develop analytical thinking and learn how to apply mathematical methods to solve real physical problems. This edition will be an important step towards mastering complex topics and deepening knowledge in the field of mathematical physics. If you are looking for literature that combines theory and practice, helps solve problems and expands the horizons of knowledge, then the book of Guryanov and Oblakov is exactly what you need. Do not miss the opportunity to immerse yourself in the world of mathematical physics and discover new horizons!