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MATHEMATICS
Surfaces of negative extrinsic curvature in a Riemannian space with nonpositive Riemannian curvature
I. S. Brandt Moscow Institute of Electronic Engineering
Citation:
I. S. Brandt, “Surfaces of negative extrinsic curvature in a Riemannian space with nonpositive Riemannian curvature”, Dokl. Akad. Nauk SSSR, 194:4 (1970), 747–749
Linking options:
https://www.mathnet.ru/eng/dan35699 https://www.mathnet.ru/eng/dan/v194/i4/p747
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