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age author description
Fri, 10 Oct 2014 11:02:39 +0000 HackBot <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.