Basic Homological Algebra

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The book offers a comprehensive introduction to homological algebra, designed for a one-quarter course yet adaptable for longer studies. It emphasizes early coverage of Ext and Tor, with foundational material in the first three chapters. Subsequent chapters explore traditional topics like dimension and ring changes, alongside derived functors and special properties of Tor. The text is structured for independent study, featuring optional sections that cater to various interests, including hard-to-find topics and Lazard's theorem, making it a valuable resource for both students and self-learners.