The book "Numbered Methods in the Theory of Neutron Transfer" by Gury Ivanovich Marchuk and Vyacheslav Ivanovich Lebedev is a unique and in-depth study in the field of physics and mathematical modeling. This publication will be of particular interest to specialists and students involved in nuclear physics, radiation safety and numerical methods in engineering. If you are looking for a qualitative source of information about neutrons, their behavior and methods of numerical analysis, then this book will be a real find for you. In the pages of the book, the authors examine in detail the theoretical foundations of neutron transfer, as well as modern numerical methods used to solve complex problems related to this topic. Attention is paid to both classical approaches and modern algorithms, which allows the reader to get a complete picture of the current state of science in this area. The book covers a wide range of topics, from the foundations of transfer theory to the practical applications of numerical methods, making it useful for both theorists and practitioners. One of the key topics of the book is the analysis of various models of neutron transfer that are used in nuclear physics and related fields. The authors emphasize the importance of accurate modeling of processes associated with neutron flux, and emphasize how numerical methods allow solving problems that cannot be solved analytically. This makes the book relevant to researchers working on projects in nuclear energy, medical physics, and radiation protection. The book will be especially useful for students and graduate students studying in specialties related to physics, mathematics and engineering . It can serve as a training manual for courses on numerical methods and transfer theory, and also become a reference book for researchers engaged in the study of neutron fluxes. Readers interested in new technologies in the field of nuclear energy and radiation safety will also find in this edition a lot of useful information. The style of the authors is distinguished by clarity and accessibility of the presentation, which makes complex concepts more understandable to a wide audience. Gury Ivanovich Marchuk and Vyacheslav Ivanovich Lebedev are well-known specialists in their field, and their experience and knowledge are reflected in each chapter of the book. This publication is not only informative, but also inspires further research, encouraging readers to delve into the study of numerical methods and their application in neutron transfer theory. Numerical methods in neutron transfer theory will be an excellent addition to the library of any researcher or student seeking to understand the complex processes taking place in the world of nuclear physics. If you are looking for literature that will help you understand the intricacies of numerical simulation and neutron transfer, this edition is your ideal choice. Do not miss the opportunity to expand your knowledge and deepen your understanding of this important and relevant topic .