Artículos (Geometría y Topología): Envíos recientes
Mostrando ítems 101-120 de 199
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¿Perderse en un laberinto? No con las matemáticas
(Federación Iberoamericana de Sociedades de Educación Matemática, 2010-03)En este artículo se sugiere la posibilidad de introducir algunos temas de las Matemáticas de Secundaria o Bachillerato, ...
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Computational algorithm for obtaining Abelian subalgebras in Lie algebras
(World Academy of Science, Engineering and Technology, 2009)The set of all abelian subalgebras is computationally obtained for any given finite-dimensional Lie algebra, starting from ...
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Relations between combinatorial structures and Lie algebras: centers and derived Lie algebras
(Springer, 2015-04)In this paper, we study how two important ideals of a given Lie algebra g (namely, the center Z(g) and the derived Lie ...
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Isomorphism and Isotopism Classes of Filiform Lie Algebras of Dimension up to Seven Over Finite Fields
(Springer, 2016)Since the introduction of the concept of isotopism of algebras by Albert in 1942, a prolific literature on the subject has ...
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Graph operations and Lie algebras
(Taylor & Francis, 2013)This paper deals with several operations on graphs and combinatorial structures linking them with their associated Lie ...
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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 ...
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On the existence of almost contact structure and the contact magnetic field
(Springer, 2009-10)In this short note we give a simple proof of the existence of an almost contact metric structure on any orientable ...
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Rigidity of pseudo-isotropic immersions
(Elsevier, 2009-07)Several notions of isotropy of a (pseudo)Riemannian manifold have been introduced in the literature, in particular, the ...
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The contact magnetic flow in 3D Sasakian manifolds
(IOP Publishing, 2009-05-15)We first present a geometrical approach to magnetic fields in three-dimensional Riemannian manifolds, because this particular ...
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Isotropic submanifolds of pseudo-Riemannian spaces
(Elsevier, 2012-09)The family of all the submanifolds of a given Riemannian or pseudo-Riemannian manifold is large enough to classify them ...
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Massless particles in three-dimensional Lorentzian warped products
(AIP Publishing, 2007-01)The model of a massless relativistic particle with curvature-dependent Lagrangian is well known in (d+1)-dimensional ...
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Magnetic vortex filament flows
(AIP Publishing, 2007-08)We exhibit a variational approach to study the magnetic flow associated with a Killing magnetic field in dimension 3. In ...
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The contact number of a pseudo-Euclidean submanifold
(Mathematical Society of the Republic of China, 2008-10)In this paper we define the contact number of a pseudo-Riemannian submanifold into the pseudo-Euclidean space, and prove ...
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Submanifolds of generalized Sasakian space forms
(Mathematical Society of the Republic of China, 2009-06)In the present paper submanifolds of generalized Sasakian-spaceforms are studied. We focus on almost semi-invariant ...
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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 ...
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Generalized (κ,μ)-space forms
(Springer, 2013-02)Generalized (κ, µ)-space forms are introduced and studied. We examine in depth the contact metric case and present examples for all possible dimensions. We also analyse the trans-Sasakian case.
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Sasaki-Einstein and paraSasaki-Einstein metrics from (κ,μ)-structures
(Elsevier, 2013-11)We prove that every contact metric (κ, µ)-space admits a canonical η-Einstein Sasakian or η-Einstein paraSasakian metric. ...
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The curvature tensor of (κ,μ,ν)-contact metric manifolds
(Springer, 2015-07)We study the Riemann curvature tensor of (κ, µ, ν)-contact metric manifolds, which we prove to be completely determined ...
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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 ...
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Isotropy and marginally trapped surfaces in a spacetime
(IOP Publishing, 2010)In this note we shall study the notions of isotropic and marginally trapped surface in a spacetime by using a differential ...