Numerical and functional series: training. -method. Handbook" is a unique textbook created by a team of authors, which will become an indispensable assistant for students, graduate students and anyone interested in mathematics and its applications. This edition contains basic concepts and methods related to numerical and functional series, which makes it ideal for studying both at the initial and advanced level. From the first pages, the reader plunges into the world of numbers and functions, where each topic is revealed with clarity and depth. The book begins with the basics, introducing the reader to the concept of numerical series, their convergence and divergence .. Here you will find not only theoretical explanations, but also many examples that will help you better absorb the material. This makes the manual especially valuable for those who are just starting out in mathematics or want to refresh their knowledge. However, Numerical and Functional Series is not limited to the basic concepts. In the course of reading, you will encounter more complex topics such as functional series, their properties and applications in various fields of science and technology. The book raises important questions related to the analysis and synthesis of functions, which makes it relevant for students of technical and natural sciences specialties. This work will be interesting not only for students, but also for teachers who are looking for quality materials for their classes. The manual can be the basis for coursework and thesis, as well as a useful resource for preparing for exams . It is suitable for those who are passionate about mathematics, physics, engineering and related sciences. If you are looking for literature on mathematical analysis, function theory or just want to deepen your knowledge in the field of series, this guide will be a real find for you. The style of the authors is clear and accessible, which makes it easy to digest even the most complex topics. They use a lot of examples and tasks, which makes the learning process not only effective, but also exciting. The book is filled with illustrations and graphs that help to visualize the material and better understand its application in practice. In addition, this manual may be useful for those who are interested in modern methods of data analysis and mathematical modeling. With the rapid development of technology and science, knowledge of numerical and functional series is becoming increasingly relevant. Understanding these concepts opens the door to new career and study opportunities. If you are looking for books on mathematical analysis, series theory or just want to expand your knowledge in this area, "Numbered and functional series: study. -method. It will be your reliable companion.... This edition will not only enrich your wealth of knowledge, but also inspire further research in the world of mathematics. Do not miss the chance to get acquainted with this fascinating and informative book, which will help you understand complex issues and make studying mathematics interesting and accessible.