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annotate wisdom/lambek's lemma @ 11013:8341e2b3f3be

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<oerjan> rm 5pEV4X5h
author HackBot
date Thu, 15 Jun 2017 01:33:38 +0000
parents d3a12978331a
children
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10491
d3a12978331a <shachaf> le/rn_append lambek\'s lemma//It can be proved with as few as five arrows.
HackBot
parents: 8401
diff changeset
1 Lambek's Lemma, invented by Joachim "Taneb" Lambek, states that initial algebras have inverses. It can be proved with as few as five arrows.