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Mostrando ítems 1-10 de 18
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
Characterization of complex filiform Lie algebras of dimension 0 according to whether they are or not derived from others
(Universidad de Zaragoza, 1993)
In this paper, we characterize those Complex Filiform Lie Algeoras of dimension 0 which are derived from other Solvable Lie ALgebras of higher dimensions. This result and the previous one given in ({0]) allow us to lind a ...
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 contact version of B.-Y. Chen's inequality and its applications to slant immersions
(Kyungpook National University, 1999)
We establish a version of B.-Y. Chen’s inequality for a submanifold of a Sasakianspace-form, tangent to the structure vector field of the ambient space. We obtain some applications and we study this inequality for slant ...
Tesis Doctoral
Algoritmos de cálculo de homología efectiva de los espacios clasificantes
(1993)
El propósito esencial de esta memoria es el de describir varios algoritmos de cálculo de homología efectiva de los espacios clasificantes y de los espacios de Eilenberg-MacLane. Intentaremos en todo lo que resta de ...
Tesis Doctoral
Clasificación de las álgebras de Lie filiformes complejas derivadas de otras álgebras
(1997)
"El problema de la clasificación de las álgebras de Lie se reduce actualmente a la clasificación de las álgebras de Lie resolubles complejas, debido por una parte a al conocida descomposición de Levi de un álgebra de Lie ...
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.