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<__kerbal___> learn Bing: Microsoft\'s attempt to hijack Google\'s good ideas
author HackBot
date Wed, 28 Jun 2017 13:39:25 +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.