Revista de la Unión Matemática Argentina
versión On-line ISSN 1669-9637
BARREIRO CHAVES, Rosa Maria S. y SOUSA, Luiz Amancio M.. On Complete Spacelike Submanifolds in the De Sitter Space With Parallel Mean Curvature Vector. Rev. Unión Mat. Argent. [online]. 2006, vol.47, n.1, pp. 85-98. ISSN 1669-9637.
The text surveys some results concerning submanifolds with parallel mean curvature vector immersed in the De Sitter space. We also propose a semi-Riemannian version of an important inequality obtained by Simons in the Riemannian case and apply it in order to obtain some results characterizing umbilical submanifolds and a product of submanifolds in the (n + p)-dimensional De Sitter space .
Palabras llave : De Sitter space; Simons type formula; complete spacelike submanifolds; parallel mean curvature vector.