view wisdom/lambek's lemma @ 12233:cc8d3fec0222 draft

<b_jonas> `` chmod -c a+x /hackenv/bin/addwhatis
author HackEso <hackeso@esolangs.org>
date Thu, 05 Dec 2019 21:02:25 +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.