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view wisdom/klein bottle @ 11244:5e82a162281d
<shachaf> learn A kittegory is just a small category.
author | HackBot |
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date | Sun, 26 Nov 2017 04:37:08 +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.