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<b_jonas> `` perl -ni -e \'/^you\\(.lamb/ or print\' /hackenv/share/whatis
author HackEso <hackeso@esolangs.org>
date Mon, 25 Nov 2019 08:37:20 +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.