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view wisdom/klein bottle @ 9984:8fa7b097affc
<oerjan> undo 9983
author | HackBot |
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date | Thu, 15 Dec 2016 02:05:13 +0000 |
parents | 3ce8590589fa |
children |
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A Klein bottle is like a torus, but more insidious. Taneb tried to invent it, but got trapped inside.