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view wisdom/categorical product @ 5310:891fa7b0ba86
<Jafet> ` echo \'main(i){while(i+=2<3);}\' >/tmp/a.c && gcc -c -std=c99 -Wall -Wextra /tmp/a.c
author | HackBot |
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date | Sun, 12 Apr 2015 04:46:23 +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.