Generatrix of catenoid of space 3-form
Анотація
Constant mean curvature surfaces of revolution in euclidean 3-space are known as surfaces of Ch. Delaunay. They possess one remarkable property: their profile curves (generatrices) are the trajectories of focuses of conic sections by its rolling along the straight line. Analogous construction is realized in the space forms H 3 and S 3 in the case of minimal surfaces of revolution and the following theorem is proved.
Theorem. Generatrix of catenoid of revolution of space form H 3(S3) is the trajectory of focus of hyperbolic (spherical) parabola by its rolling along the geodesic ray.
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L. A. Masaltsev, Generatrix of catenoid of space 3-form, Мат. физ. анал. геом. 6 (1999), 81-99.
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