
doi: 10.1007/bf00774569
According to the authors' abstract, ``non-spherical hypersurfaces in \(E^ 4\) with non-zero constant mean curvature and constant scalar curvature are the only hypersurfaces possessing the following property: Its position vector can be written as a sum of two non-constant maps, which are eigenmaps of the Laplacian operator with corresponding eigenvalues the zero and a non-zero constant''.
Differential geometry of immersions (minimal, prescribed curvature, tight, etc.), mean curvature, scalar curvature, Higher-dimensional and -codimensional surfaces in Euclidean and related \(n\)-spaces, constant mean curvature, hypersurfaces in \(E^ 4\), hypersurface, constant scalar curvature, eigenmaps of the Laplacian
Differential geometry of immersions (minimal, prescribed curvature, tight, etc.), mean curvature, scalar curvature, Higher-dimensional and -codimensional surfaces in Euclidean and related \(n\)-spaces, constant mean curvature, hypersurfaces in \(E^ 4\), hypersurface, constant scalar curvature, eigenmaps of the Laplacian
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