Contemporary Abstract Algebra, Ninth Edition, authored by Joseph Gallian, is designed primarily for an abstract algebra course aimed at equipping students with the ability to perform computations and construct proofs. This edition emphasizes the relevance of abstract algebra as a current and dynamic field, actively utilized in various scientific disciplines such as physics, chemistry, and computer science. The book covers traditional topics comprehensively yet presents them within the context of modern applications, making it an engaging and relevant resource for students and instructors alike.