Yamada, Akira Homogeneity of hypersurfaces in a sphere. (English) Zbl 0981.53040 Tsukuba J. Math. 22, No. 1, 131-143 (1998). From the introduction: In connection with I. M. Singer’s problem [Commun. Pure Appl. Math. 13, 685-697 (1960; Zbl 0171.42503)], we consider the homogeneity of hypersurfaces in \(S^{n+1}\) and prove the following Theorem A. Let \(M\) be an oriented closed hypersurface in \(S^{n+1}\) which is curvature homogeneous up to order 4. Then, \(M\) is homogeneous. MSC: 53C40 Global submanifolds 53C30 Differential geometry of homogeneous manifolds Keywords:homogeneity; closed hypersurface; curvature homogeneous Citations:Zbl 0171.42503 PDF BibTeX XML Cite \textit{A. Yamada}, Tsukuba J. Math. 22, No. 1, 131--143 (1998; Zbl 0981.53040) Full Text: DOI