view wisdom/lambek's lemma @ 12495:acd9425c0c6d draft

<shachaf> undo 11916
author HackEso <hackeso@esolangs.org>
date Mon, 04 Mar 2024 01:02:52 +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.