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<oerjan> learn E-modules are modules over a web ring. Uaneb invented them.
author | HackBot |
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date | Wed, 05 Oct 2016 15:05:28 +0000 |
parents | 7f957c1f4661 |
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composition is where you take morphisms such as Phantom and Hoover from the Pha category and combine them together: Hoover ∘ Phantom.