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comment Prerequisites and references for homological algebra
@user26857 Well, first of all, Hochschild homology and cohomology are just Tor and Ext! You might be right, though... Maybe they are a bit advanced. But I think if one have read Atiyah-Macdonald, one should probably know what Tor and Ext are (if I remember correctly, they talk about it a bit).
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revised Prerequisites and references for homological algebra
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