view wisdom/lambek's lemma @ 11002:586162845de3

<boily> forget math
author HackBot
date Wed, 07 Jun 2017 00:45:23 +0000
parents d3a12978331a
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Lambek's Lemma, invented by Joachim "Taneb" Lambek, states that initial algebras have inverses. It can be proved with as few as five arrows.