view wisdom/lambek's lemma @ 12406:ae9ff8279b2d draft

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author HackEso <hackeso@esolangs.org>
date Fri, 18 Jun 2021 00:38:22 +0100
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.