Abstract:
In this paper we prove that a submanifold with parallel mean curvature of a space of constant curvature, whose second fundamental form has the same algebraic type as the one of a symmetric submanifold, is locally symmetric. As an application, using properties of Clifford systems, we give a short and alternative proof of a result of Cartan asserting that a compact isoparametric hypersurface of the sphere with three distinct principal curvatures is a tube around the Veronese embedding of the real, complex, quaternionic or Cayley projective planes.
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Received: 22 April 1998
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Console, S., Olmos, C. Clifford systems, algebraically constant second fundamental form and isoparametric hypersurfaces. manuscripta math. 97, 335–342 (1998). https://doi.org/10.1007/s002290050106
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DOI: https://doi.org/10.1007/s002290050106