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<b_jonas> learn wisdom.pdf is https://dl.dropboxusercontent.com/u/2023808/wisdom.pdf
author HackBot
date Sun, 17 Apr 2016 19:10:20 +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.