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<oerjan> learn Eventually we\'ll have a better wisdom here.
author | HackBot |
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date | Wed, 14 Jun 2017 03:22:53 +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.