
doi: 10.1007/bf01464724
It is proved that any regular isometric immersion of a Euclidean plane in (three-dimensional) Lobachevskii space is either a homeomorphism onto an orisphere or a covering of the surface formed by the rotation of an equidistant about its base.
Differential geometry of immersions (minimal, prescribed curvature, tight, etc.), Global surface theory (convex surfaces à la A. D. Aleksandrov)
Differential geometry of immersions (minimal, prescribed curvature, tight, etc.), Global surface theory (convex surfaces à la A. D. Aleksandrov)
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