view wisdom/lambek's lemma @ 9950:7f0e7ff05273

<oerjan> revert 9947
author HackBot
date Mon, 12 Dec 2016 02:44:19 +0000
parents 4d453e9a7250
children d3a12978331a
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Lambek's Lemma, invented by Joachim "Taneb" Lambek, states that initial algebras have inverses.