Collection of works of academician A . N. Krylova . Addition to tt. 5 and 6” is a unique publication that represents an important contribution to Russian science and culture. Academic A. N. Krylov, an outstanding mathematician and mechanic, left behind a rich legacy that continues to inspire and amaze readers and researchers to this day. This addition to the already known volumes 5 and 6 of his works not only expands the understanding of his scientific activities, but also opens up new horizons for understanding his ideas and concepts. The book covers a wide range of topics related to mechanics, mathematics and physics, and will be of interest not only to specialists in these fields, but also to those who are simply interested in science. Readers interested in topics such as elasticity theory, dynamics, and continuum mechanics will find this edition a lot of useful and fascinating. Krylov masterfully combines complex scientific ideas with accessible language, which makes his work understandable even for those who are not professionals in the field of science. The topics raised in this book are relevant to this day, because many of them concern fundamental issues that concern scientists and researchers. Krylov not only formulates theoretical aspects, but also illustrates them with practical examples, which makes his work especially valuable for undergraduate and graduate students. This book will be an excellent addition to the library of anyone who seeks to deepen their knowledge in mathematics and mechanics. Style A. N. Krylov is distinguished by clarity and logical presentation, which allows the reader to easily follow his thought. He skillfully uses mathematical formulas and graphs to visualize complex concepts, making his work not only informative but also aesthetically appealing. Krylov is also known for his other works, such as "Fundamentals of Mechanics" and "The Theory of Elasticity", which have already gained recognition among the scientific community. This work, as well as the addition to the tt. 5 and 6, reflect his deep understanding of the subject and his desire to make science accessible to a wide range of readers. The book will be of interest not only to students and graduate students, but also to teachers, researchers and anyone interested in modern scientific achievements. It can be an excellent teaching tool for courses in mechanics and mathematics, as well as a source of inspiration for those seeking new discoveries and research in these areas. If you are looking for a deep and meaningful reading that will help you broaden your horizons in the field of science, "Collection of Works of Academician A. N. Krylova . Addition to tt. 5 and 6" is exactly what you need. This book will not only enrich your knowledge, but also give you new ideas for reflection and research. Do not miss the opportunity to touch the heritage of one of the greatest minds of their time and discover a world full of fascinating discoveries and scientific achievements.