Mercurial > repo
view wisdom/categorical product @ 11329:dd6d2180c5b6
<wob_jonas> perl -e open$h,"<",($f="wisdom/font");local$/;$_=<$h>; s"& \\S+/twitter\\.com/\\S+""; if (1) { open $o,">",$f;print$o $_; } print substr $_,200;
author | HackBot |
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date | Wed, 17 Jan 2018 21:02:27 +0000 |
parents | 00af4aaadf2c |
children |
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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 unique morphism w:X->C such that u=wp and v=wq.