view wisdom/lambek's lemma @ 11261:909f0c9d02de

<fizzie> ` sed -i -e "s|$| , fizzie\'s font https://github.com/fis/rfk86/tree/master/web/font|" wisdom/font
author HackBot
date Tue, 12 Dec 2017 18:59:45 +0000
parents d3a12978331a
children
line wrap: on
line source

Lambek's Lemma, invented by Joachim "Taneb" Lambek, states that initial algebras have inverses. It can be proved with as few as five arrows.