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<oerjan> slwd tip//s,\x03 if,\x0f if,
author HackBot
date Sun, 02 Jul 2017 03:10:51 +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.