view wisdom/lambek's lemma @ 11910:1f72cd441cc5 draft

<int-e> revert
author HackEso <hackeso@esolangs.org>
date Thu, 15 Aug 2019 10:46:37 +0000
parents d3a12978331a
children
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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.