The book Numerical Methods . Book 2. Methods of Mat. Physics by H. N. Kalitkin and his co-authors represent a fascinating and deep dive into the world of numerical methods used in mathematical physics. This publication will become an indispensable assistant for students, graduate students and practitioners seeking to master the complex concepts and methods that underlie modern scientific research and engineering solutions. The second book in the Numerical Methods series continues to explore the most important aspects of numerical analysis, focusing on the technique of solving problems arising in mathematical physics. The authors offer readers not only theoretical foundations, but also practical examples, which makes the material accessible and understandable. The reader will be able to get acquainted with various methods, such as methods of finite differences, finite elements and spectral methods, which allow to effectively solve differential equations arising in various fields of science and technology. This book will be especially interesting for those who study physics, mathematics or engineering sciences. It is suitable for both undergraduate and graduate students who want to deepen their knowledge in the field of numerical methods. It will also be useful to practicing engineers and scientists working in the field of simulation of physical processes, as it contains relevant examples and tasks that will help to apply theoretical knowledge in practice. The topics raised in the book cover a wide range of issues, such as numerical modeling of physical processes, analysis of the stability of numerical methods, and evaluation of their accuracy. The authors share their experience and knowledge, which allows the reader not only to master the methods, but also to understand their application in real-world tasks. This publication will be an important step towards understanding the complex processes that occur in nature and engineering, and will help readers develop the skills necessary for a successful career in the scientific and engineering fields. Style N. N. Kalitkin and his colleagues are distinguished by clarity and accessibility of presentation, which allows even complex concepts to be presented in an understandable and logical form. The authors actively use examples from real practice, which makes the material more lively and interesting. This edition continues the traditions of the author's previous works, such as "Numbered Methods. Book 1", which also discusses the basics of numerical analysis, but with an emphasis on more general methods. The book Numerical Methods . Book 2. Methods of Mat. Physics" not only expands the horizons of the reader's knowledge, but also inspires new discoveries and research. It will be an excellent addition to the library of anyone interested in mathematical physics and numerical methods. If you are looking for a high-quality tutorial that will help you understand the complex aspects of numerical analysis and its application in physics, then this publication is definitely worth your attention. Do not miss the opportunity to immerse yourself in the world of numerical methods and discover new horizons in mathematical physics with the book H. N. Kalitkina and his co-authors. It is not just a textbook it is the key to understanding the complex processes that surround us in everyday life and in scientific research.