Abstract Harmonic Analysis by Hewitt E . and Ross K. is an outstanding work in the field of mathematical analysis, which not only expands the horizons of understanding harmonic analysis, but also opens up new perspectives for researchers and students seeking to deepen their knowledge in this complex but fascinating field. This edition will be an indispensable assistant for both professionals and those who are just beginning their journey in mathematics. The book focuses on the concept of harmonic analysis, which covers a wide range of topics, including functional spaces, measures and integrals, as well as various aspects of group theory. The authors, Hewitt and Ross, offer readers a deep dive into the abstract structures that form the basis of harmonic analysis, and do so with clarity and accessibility, making their work particularly valuable to students and faculty. This book will be of interest not only to mathematicians, but also to physicists, engineers and everyone who works with the theoretical and applied aspects of analysis. Readers interested in topics such as probability theory, functional analysis and differential equations will find a lot of useful information and inspiration in it. The book is suitable for undergraduate and graduate students, as well as for professionals who want to refresh their knowledge or explore new approaches in their work. The topics raised in Abstract Harmonic Analysis cover not only theoretical aspects, but also practical applications of harmonic analysis in various fields of science and technology. The authors emphasize the importance of abstract concepts and their connection with real problems, which makes the material especially relevant in the modern world. Readers will be able to see how abstract ideas can be applied to solve specific problems in physics and engineering, giving the book added value. The style of Hewitt and Ross is clear and logical, which allows the reader to easily follow the course of thought of the authors. They use many examples and illustrations, which helps to better understand complex concepts. This makes Abstract Harmonic Analysis not only a textbook, but also a real guide to exploring new horizons in mathematics. The book may also be of interest to those who are familiar with other works of the authors. For example, their previous work, such as "Measurement and Integral Theory", has already won recognition among students and faculty. Abstract Harmonic Analysis continues this tradition by offering readers the opportunity to delve deeper into the world of abstract mathematics and harmonic analysis. If you are looking for a book that will help you not only understand, but also love harmonic analysis, then Hewitt and Ross's Abstract Harmonic Analysis will be your faithful companion. This work is not just a textbook, but a real find for anyone who wants to expand their knowledge and skills in mathematics. Do not miss the chance to get acquainted with this outstanding work, which can become the basis for your further study and research in the field of analysis.