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annotate wisdom/categorical product @ 6172:c7909d4ce118

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<oerjan> le/rn algebraic number theory/Algebraic number theory was invented by Fermat to prove his theorem, but he didn\'t have room to write it down.
author HackBot
date Mon, 02 Nov 2015 13:38:18 +0000
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children 00af4aaadf2c
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e6ce804971eb <b_jonas> learn 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.
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1 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.