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<tswett> learn \xd0\xa1\xd0\xa1\xd0\xa1\xd0\xa0 is the Russian way of writing USSR. They like to write U as \xd0\xa1 sometimes.
author HackBot
date Wed, 19 Oct 2016 02:15:18 +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.