Solved cryptogram
A Klein bottle has no inside and no outside, and it cannot be built in three dimensions.
Mathematics Facts, sourced to Wolfram MathWorld.
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What it means
Take a cylinder and join the two ends, but with a flip, the way a Moebius strip joins the ends of a ribbon. The result is a surface with one side, so an ant could walk from any point to any other without crossing an edge. Glass models sold as Klein bottles cheat: the neck passes through the wall, which the real surface does not do. Four dimensions are needed to make room for the join.
The claim comes from Wolfram MathWorld.
- SourceWolfram MathWorld
- CollectionMathematics Facts
- Difficultyeasy
- Length70 letters, 16 unique
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