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<b_jonas> fetch share/mtg/MagicCompRules-20170925.txt http://media.wizards.com/2017/downloads/MagicCompRules%2020170925.txt
author HackBot
date Wed, 04 Oct 2017 11:39:51 +0000
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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.