Abstract
It is proved that a complete surface in E 3 is a sphere or a plane if it contains at least four geodesics through each point which are plane curves.
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References
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Ogiue, K. and Takagi, R., ‘A Submanifold which contains Many Extrinsic Circles’, Tsukuba J. Math. 8 (1984), 171–182.
Takeuchi, N., ‘A Sphere as a Surface which contains Many Circles’, J. Geom. 24 (1985), 123–130.
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Takeuchi, N. A surface which contains planar geodesics. Geom Dedicata 27, 223–225 (1988). https://doi.org/10.1007/BF00151355
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DOI: https://doi.org/10.1007/BF00151355