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view wisdom/categorical product @ 8001:faebf4569ba3
<b_jonas> `` echo $\'#!/bin/sh\\nexec perl -e\\\'\'\'open$I,"<","share/mtg/allsets.txt"or die$!;$/=""; @c=grep{/(?i:$ARGV[0])/}<$I>; print $c[rand($c)];\'\\\'\' "$1"\' > bin/random-card && chmod -v a+x bin/random-card
author | HackBot |
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date | Mon, 09 May 2016 08:32:52 +0000 |
parents | 74cae6b8f28c |
children | 00af4aaadf2c |
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categorical product is like when you have two category elements A and B then their product is element C iff there are two morphisms p:C->A and q:C->B such that for every element X and morphisms u:X->A and v:X->B there is a morphism w:X->C such that u=wp and v=wq.