Nonorientable surfaces
Below is a minimal Moebius strip, which is the simplest non-orientable surface.
Above is a minimal Klein bottle with one end -- there is only one boundary curve!
Nonorientable surfaces |
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Below is a minimal Moebius strip, which is the simplest non-orientable surface. |
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Above is a minimal Klein bottle with one end -- there is only one boundary curve! |
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This surface is a projective plane with three planar ends. From far away the surface looks like the three coordinate planes. |