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<hppavilion[1]> le/rn Russell\'s Teapot//Russell\'s little Teapot / Short and stout / Orbits near Mars / Or thereabout. / If you see it / Let us know / If you don\'t / What does that show?
author HackBot
date Sat, 03 Jun 2017 08:14:52 +0000
parents 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 unique morphism w:X->C such that u=wp and v=wq.