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<fizzie> le//rn source//Sources for HackEso can be found at https://github.com/fis/hackbot + https://github.com/fis/multibot + https://github.com/fis/umlbox .
author HackEso <hackeso@esolangs.org>
date Sat, 16 Nov 2019 10:29:45 +0000
parents d3a12978331a
children
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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.