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<alercah> le/rn nundrum/A nundrum is the categorical dual of a conundrum: a problem whose solution is useless.
author HackBot
date Tue, 02 Aug 2016 16:47:18 +0000
parents 3ce8590589fa
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A Klein bottle is like a torus, but more insidious. Taneb tried to invent it, but got trapped inside.