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<b_jonas> `` ln -svf allsets-2017-09-20.txt share/mtg/allsets.txt
author HackBot
date Wed, 04 Oct 2017 11:36:52 +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.