Book "Mathematical Collection, t. 24 (66) b. 2", written by outstanding scientists L. C. by A. A. Zykov, N. I. Vilenkin and others, is a unique publication, which will be a real find for all those who are interested in mathematics at a deep level. This is not just a collection of articles, but a whole world of mathematical ideas, theories and discoveries, which opens up horizons of new knowledge and opportunities for the reader. The collection covers a wide range of topics, from function theory and functional analysis to algebra and geometry. Each article is written with a high degree of professionalism and scientific rigor, which makes them valuable for both students and experienced researchers. The book presents both classical and modern approaches to solving mathematical problems, which allows readers to see how science has developed and what new horizons open up before it. This book will be of particular interest to students and graduate students of mathematical and physical faculties, as well as teachers and researchers working in the field of mathematics and related disciplines . It will be an excellent addition to the library of anyone who seeks to deepen their knowledge and expand their horizons in mathematics. If you are interested in mathematics, love to solve complex problems or just want to understand how mathematical theories work, this collection will become a real treasure for you. The topics raised in the collection cover many aspects of mathematics, including, but not limited to, probability theory, mathematical physics, and functional analysis. Each article is not only a scientific study, but also offers the reader the opportunity to reflect on the deep questions related to the nature of mathematics and its application in the real world. This publication highlights the importance of mathematical thinking and its impact on other sciences, such as physics, economics, and computer science. The style of the authors is clear and accessible, which allows even complex ideas to convey to a wide audience. L. C. Pontryagin, known for his work in topology and functional analysis, A. A. Zykov, who made a significant contribution to the theory of functions, and H. I. Vilenkin, whose work covers many aspects of mathematical analysis, all of them have a unique ability to explain complex concepts in a simple and understandable language. Their joint work in this collection demonstrates not only their scientific talent, but also the ability to work in a team, creating a synergistic effect. If you are looking for books on mathematics that will help you deepen your knowledge and broaden your horizons, "Mathematical Collection, t. 24 (66) b. 2" would be a great choice. This publication may also be of interest to those who are looking for inspiration for their own research or just want to enjoy the beauty and grace of mathematical ideas. Do not miss the opportunity to touch the world of high mathematical achievements and discover new horizons of knowledge