view wisdom/lambek's lemma @ 11268:3b2ff7458cfd

<shachaf> slwd rules of wisdom//s/should/they &/
author HackBot
date Wed, 13 Dec 2017 11:27:32 +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.