view wisdom/lambek's lemma @ 11010:f789dea57373

<oerjan> learn Eventually we\'ll have a better wisdom here.
author HackBot
date Wed, 14 Jun 2017 03:22:53 +0000
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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.