view wisdom/lambek's lemma @ 11947:53d94403e9f7 draft

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author HackEso <hackeso@esolangs.org>
date Wed, 18 Sep 2019 11:39:11 +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.