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Wiedersehen Surface


An oriented surface for which every point belongs to a Wiedersehen pair. Proof of the Blaschke conjecture established that the only Wiedersehen surfaces are the standard round spheres.


See also

Blaschke Conjecture, Wiedersehen Pair

This entry contributed by Margherita Barile

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References

Blaschke, W. Vorlesung über Differentialgeometrie I. Berlin: Springer-Verlag, 1921.Klingenberg, W. Course in Differential Geometry. New York: Springer-Verlag, p. 164, 1978.

Referenced on Wolfram|Alpha

Wiedersehen Surface

Cite this as:

Barile, Margherita. "Wiedersehen Surface." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein. https://mathworld.wolfram.com/WiedersehenSurface.html

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