view wisdom/functor @ 2943:58c6bb1632c7

<elliott> fetch http://languagelog.ldc.upenn.edu/nll/?p=2451
author HackBot
date Sat, 25 May 2013 15:41:56 +0000
parents e037173e0012
children c777e2d91031 1e323fe0c60e
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Functors are just morphisms in the category of small categories