view wisdom/categorical product @ 9745:cc187ca416d5

<wob_jonas> `` x=bin/welkom; >$x sed s/\\.fr/\\.nl/g bin/bienvenue && chmod -v +x "$x"
author HackBot
date Sun, 20 Nov 2016 01:05:55 +0000
parents 74cae6b8f28c
children 00af4aaadf2c
line wrap: on
line source

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.