The book “Mathematical analysis of thermal processes during welding by melting with the use of computer technology”, created by the team of authors, is a unique and deep study that finds its place at the intersection of engineering, mathematics and computer technology .. This publication will become an indispensable assistant for specialists in the field of welding, materials science and heat engineering, as well as for students and graduate students studying these disciplines. The book examines the complex thermal processes that occur when welding by melting, and offers mathematical models that allow you to analyze and predict the behavior of materials in high temperatures. The authors not only describe theoretical aspects, but also demonstrate how modern computer technologies can be used to solve practical problems. This makes the book especially relevant in light of the rapid development of computational methods and software used in engineering practice. The topics raised in the book cover a wide range of issues, including thermodynamics, the mechanical properties of materials, and the impact of various factors on the quality of welded compounds. The reader will be able to learn about how to correctly model thermal processes, what parameters need to be taken into account and how the results of mathematical analysis can be applied to improve welding technologies. This publication will become a real storehouse of knowledge for those who seek to improve their skills and deepen their understanding of the processes that occur during welding. The book will be of interest not only to professional welders and engineers, but also to students of technical universities who want to gain deeper knowledge in the field of welding technologies. It can also attract the attention of researchers engaged in the development of new materials and technologies, as well as anyone interested in modern methods of analysis and modeling of physical processes. The style of the authors is distinguished by clarity and accessibility of presentation, which allows the reader to easily assimilate complex concepts. The text contains illustrations, graphs and examples that help to better understand the material and see its practical application. This makes the book not only useful, but also fascinating to read. The team of authors consists of experienced specialists, each of whom contributed to this study .. Their previous work covers a wide range of topics related to welding and materials science, which confirms their high level of expertise. The book "Mathematical analysis of thermal processes during welding by melting with the use of computer technology" is not just a textbook, but a real encyclopedia of knowledge that will help readers understand the intricacies of welding processes and master modern methods of their analysis. If you are looking for information on how mathematical models can improve welding technologies, or want to know how computer technologies affect welding processes, this publication will be a real discovery for you. The book will be useful to those interested in topics such as thermodynamics, material mechanics and computer modeling, and will be an important step towards professional growth in the field of welding and materials science.