An Introduction to Homological Algebra

Learning homological algebra is a two-stage affair. First, one must learn the language of Ext and Tor and what it describes. Second, one must be able to compute these things, and, this involves another language: spectral sequences. This book covers homological algebra which motivates the subject in [...]
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Learning homological algebra is a two-stage affair. First, one must learn the language of Ext and Tor and what it describes. Second, one must be able to compute these things, and, this involves another language: spectral sequences. This book covers homological algebra which motivates the subject in terms of its origins in algebraic topology.