view wisdom/lambek's lemma @ 11282:0987fcb66a1c

<oerjan> learn The porthellingularity will happen when boily starts making a porthello and cannot stop braiding in more and more words.
author HackBot
date Mon, 25 Dec 2017 18:53:10 +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.