The classification of hypersurfaces of a Euclidean space with parallel higher order fundamental form

On Spherical Image Maps Whose Jacobians Do Not Change Sign

Philip Hartman, Louis Nirenberg · American Journal of Mathematics · 1959 · 269 citations

Engineering, Vision Science, Computer Vision +6

Homogeneity and some curvature conditions for hypersurfaces

Patrick J. Ryan · Tohoku Mathematical Journal · 1969 · 185 citations · Full text

Natural Sciences, Earth Sciences, Surface Science +7

On hypersurfaces satisfying a certain condition on the curvature tensor

Katsumi Nomizu · Tohoku Mathematical Journal · 1968 · 106 citations · Full text

Natural Sciences, Physics, Geometry +6

A THEOREM ON CURVATURE TENSOR FIELDS

Katsumi Nomizu, Hideki Ozeki · Proceedings of the National Academy of Sciences · 1962 · 29 citations

Education, Demography, History +14