view wisdom/lambek's lemma @ 11349:2c47cb973977

<wob_jonas> `` rm -v wisdom/sparkle
author HackBot
date Wed, 21 Feb 2018 16:24:44 +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.