Listar Geometría y Topología por título
Mostrando ítems 190-209 de 276
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Artículo
On manifolds with nonhomogeneous factors
(Springer, 2012-06)We present simple examples of finite-dimensional connected homogeneous spaces (they are actually topological manifolds) ...
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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.
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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 ...
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Ponencia
On surfaces in digital topology
(1995)In R. Ayala, E. Domínguez, A.R. Francés, A. Quintero, J. Rubio. A Polyhedral Approach to Digital Topology a new framework ...
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Artículo
On the classifying space for proper actions of groups with cyclic torsion
(De Gruyter, 2014-01)In this paper we introduce a common framework for describing the topological part of the Baum-Connes conjecture for a ...
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Artículo
On the connectivity of skeletons of pseudomanifolds with boundary
(Mathematical Institute, Academy of Sciences of the Czech Republic, 2002)In this note we show that 1-skeletons and 2-skeletons of n-pseudomanifolds with full boundary are (n+ 1)-connected graphs and n-connected 2-complexes, respectively. This generalizes previous results due to Barnette and Woon.
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Artículo
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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Artículo
On the Freudenthal extensions of proper confluent maps
(University of Houston, 2012)In this paper we study when Freudenthal extensions of proper maps preserve the (weak, semi) confluency. Also the extensions to the Alexandroff one-point compactificaton are considered.
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Artículo
On the functoriality of cohomology of categories
(Elsevier, 2006-03)In this paper we show that the Baues-Wirsching complex used to define cohomology of categories is a 2-functor from a certain ...
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Artículo
On the idempotency of some composite functors
(Springer, 2012-01)We present examples of localization functors whose composition with certain cellularization functors is not idempotent, and vice versa.
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Artículo
On the locally finite chain algebra of a proper homotopy type
(Belgian Mathematical Society, 1996)In the classical paper [A-H] Adams-Hilton constructed a free chain algebra which is an important algebraic model of a ...
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Artículo
On the topology of locally 2-connected Peano continua
(Rocky Mountain Mathematics Consortium, 2012)Several recent results by Thomassen ([23 The locally connected compatc metric spaces embeddable in the plane, Combinatorica ...
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Artículo
On totally geodesic invariant submanifolds of an S-manifold
(Real Academia de Ciencias de Zaragoza, 1988)In [1] Blair, O.E.: 1970, J. Diff. Geom. 4, (155-167), S-manifolds, which reduce in a special case to Sasakian manifolds, ...
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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 ...
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Artículo
One-relator groups and proper 3-realizability
(European Mathematical Society, 2009)How different is the universal cover of a given finite 2-complex from a 3-manifold (from the proper homotopy viewpoint)? ...
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Artículo
Optimal inequalities, contact delta-invariants and their applications
(Malaysian Mathematical Sciences Society, 2013)Associated with a k-tuple (n1, . . . , nk) ∈ S(2n + 1) with n ≥ 1, we define a contact δ-invariant, δc (n1, . . . , nk), ...
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Ponencia
El papel de las webquest en las NTIC
(2008-07)La ponencia que aquí se presenta persigue un triple objetivo. Por una parte, mostrarle al lector en general, y al profesorado ...
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Artículo
Un paseo fotográfico por la vida de Sophus Lie
(Sociedad Colombiana de Matemáticas, 2010)It is quite a lot scarce the literature on the Norwegian mathematician Sophus Lie, in spite of being him, as the great ...
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Artículo
Pedro de Lucuce y Ponce y las instituciones matemático-militares españolas del siglo XVIII
(Real Sociedad Matemática Española, 2013)Dos años después, vuelve a la sección de Historia de La Gaceta de la RSME el tema matemático-militar durante el siglo XVIII ...
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Artículo
¿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, ...