view wisdom/klein bottle @ 9285:8320c9c4620f

<oerjan> learn Umlaut is German for "hum aloud", an important feature of the German language. It is indicated by putting two dots over the vowel of the syllable.
author HackBot
date Sat, 15 Oct 2016 00:04:47 +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.