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<oerjan> learn A corkscrew is a downwards spiral of doom. See mapole.
author | HackBot |
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date | Mon, 17 Oct 2016 00:04:46 +0000 |
parents | ca4257b9b1e7 |
children |
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A free structure is one that has no nontrivial identities, except algebraist phrase that in a much fancier way with morphisms.