Klein bottle

The Klein bottle is obtained from a square by identifying one pair of opposite sides with matching direction and the other pair with reversed direction.

Table of contents 141 3
- Orientation double cover of the Klein bottle Klein bottle 80 1
  - Klein-bottle mapping-cylinder obstruction to simple connectivity Orientation double cover of the Klein bottle 55
- Flat Klein-bottle geodesic model Klein bottle 36

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Topological surface
Topology
Geometry and topology
Area of mathematics
Mathematics
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Solution
Solution