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Einstein Spaces of Class One
Abstract
The Einstein spaces R3 and R4 are umbilical when they are locally and isometrically embedded (class one) into a Riemannian space of constant curvature is proved.
The Einstein spaces R3 and R4 are umbilical when they are locally and isometrically embedded (class one) into a Riemannian space of constant curvature is proved.