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view wisdom/in @ 8416:1ca4c4611692
<oerjan> le/rn klein bottle//A Klein bottle is like a torus, but more insidious. Taneb tried to invent it, but got trapped inside.
author | HackBot |
---|---|
date | Thu, 09 Jun 2016 00:48:08 +0000 |
parents | 50e59635897f |
children | 02507a454f2a |