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<oerjan> mkx ../bin/u//cd ${HACKENV-/hackenv}; nur "$1"
author HackEso <hackeso@esolangs.org>
date Wed, 27 Nov 2019 02:11:28 +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.