view wisdom/lambek's lemma @ 11345:f1282a483ad9

<int-e> learn The password of the month is late.
author HackBot
date Thu, 15 Feb 2018 21:57:24 +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.