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Artículo
Generalized S-space-forms with two structure vector fields
(De Gruyter, 2010-01)
We introduce and study generalized S-space-forms with two structure vector fields. We also present several examples of these manifolds such as certain hypersurfaces of Sasakianspace-forms, principal toroidal bundles and ...
Artículo
Some special types of developable ruled surface
(Hacettepe University (Faculty of Science), 2010)
In this study we consider the focal curve Cγ of a space curve γ and its focal curvatures. We characterize some special types of ruled surface, choosing one of the base curves or director curves as the focal curve of the ...
Artículo
On slant submanifolds of neutral Kaehler manifolds
(Mathematical Society of the Republic of China, 2010-04)
An indefinite Riemannian manifold is called neutral it its index is equal to one half of its dimension and an indefinite Kaehler manifold is called neutral Kaehler if its complex index is equal to the half of its complex ...