Group and Symmetry Theory: End Groups . Groups and Lie algebras" is a fascinating and deep dive into the world of abstract algebra, written by a team of authors, each of whom is an expert in their field. This publication will become an indispensable assistant for students, graduate students and teachers interested in mathematics, physics and related sciences. The book focuses on group theory, one of the key areas of mathematics that studies symmetry and its properties. The authors offer the reader not just a set of theoretical knowledge, but also a practical understanding of how groups and their structures affect various aspects of science and technology. They consider finite groups that play an important role in various mathematical disciplines, as well as Lie groups and algebras, which are the basis for many modern research in theoretical physics. The book will be especially interesting to those who are fond of mathematics and are looking for ways to apply abstract concepts in real-world problems. Senior students, graduate students and teachers will find here not only the theoretical foundations, but also a lot of examples, tasks and applications that will help to better assimilate the material. Also, this publication can attract the attention of physicists, engineers and specialists in the field of computer science, since symmetry and groups have a wide application in these areas. The topics raised in the book cover a wide range of issues, from the foundations of group theory to more complex concepts such as group representations and their applications in quantum mechanics. The authors pay attention not only to mathematical aspects, but also to philosophical issues related to symmetry and its role in nature. This makes the book not only a textbook, but also a source of inspiration for reflections on beauty and harmony that can be found in mathematics and physics. The style of the authors is distinguished by clarity and accessibility, which allows even complex concepts to be presented in an understandable form. They use many illustrations and examples to help the reader better understand the material. This makes the book ideal for those who are just beginning to get acquainted with group theory, as well as for more experienced readers who want to deepen their knowledge. If you are looking for literature that will help you understand topics such as symmetries in mathematics and physics, or want to learn more about finite groups and Lie algebras, then “Group and Symmetry Theory: Finite Groups. Groups and Lie algebras" will be a real find for you. This book will not only expand your knowledge, but also inspire further research in mathematics and its applications. In addition to this book, you can also pay attention to other works on group theory and algebra, such as "