Mercurial > repo

view wisdom/categorical product @ 7664:91337bae4e96

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
<moon__> mkx bin/swat//echo ---\xe2\x96\xa6\xe2\x96\xa6 bad $1
author HackBot
date Tue, 03 May 2016 00:29:53 +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.