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<kspalaiologos> `` rm -f /hackenv/bin/bfi
author HackEso <hackeso@esolangs.org>
date Sat, 04 Jan 2020 09:50:24 +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.