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<int-e> le/rn rip//R.I.P. is short for "running in pyjamas".
author HackBot
date Sat, 16 Dec 2017 19:53:31 +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.