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Mostrando ítems 1-8 de 8
Artículo
CR-products of S-manifolds
(Sociedade Portuguesa de Matemática, 1990)
In this paper certain CR-submanifolds namely the CR-products, are studied. A characterization theorem is given and the case of CR-products of S-manifolds whose invariant f-sectional curvature is constant, is investigated.
Artículo
Semi-slant submanifolds of a Sasakian manifold
(Springer, 1999-11)
We define and study both bi-slant and semi-slant submanifolds of an almost contact metric manifold and, in particular, of a Sasakian manifold. We prove a characterization theorem for semi-slant submanifolds and we obtain ...
Artículo
On pseudo-Einstein hypersurfaces of ℋ2n+s
(Indian National Science Academy, 1996-05)
In this paper, some properties of the geometry of pseudo-Einstein hypersurfaces of the S-manifold ℋ 2n+s are studied and a theorem concerning their principal curvatures is obtained.
Tesis Doctoral
Transversalidad en 2-complejos
(1996)
"Si bien el problema de la Transversalidad ha sido ampliamente estudiado en la Teoría de Grafos, los 2-complejos de Euler ha sido tratados, hasta el momento, dentro del marco de la Topología Algebraica. El objetivo central ...
Artículo
On certain anti-invariant submanifolds of an S-manifold
(Sociedade Portuguesa de Matemática, 1993)
In this paper, the geometry of certain anti-invariant submanifolds of an S-manifold, namely those which are normal to the structure vector fields, is studied.
Artículo
A classification of totally F-umbilical submanifolds of an S-manifold
(Soochow University, Department of Mathematics, 1992-04)
In this note a classification theorem for totally f-umbilical submanifolds of an S-space form is obtained.
Tesis Doctoral
Subvariedades Slant en variedades de contacto
(1998-05-19)
Las subvariedades slant constituyen un importante caso intermedio entre las subvariedades invariantes y anti-invariantes. De hecho, diremos que una subvariedad M, tangente al campo de estructura Ԑ de una variedad casi-contacto ...
Artículo
On ξ-conformally flat contact metric manifolds
(Indian National Science Academy, 1997-06)
In this paper, the notion of ξ-conformally flat on a contact metric structure is introduced and it is proved that any K-contact metric manifold is ξ-conformally flat if and only if it is an η-Einstein Sasakian manifold. ...