Listar Artículos (Geometría y Topología) por fecha de publicación
Mostrando ítems 21-40 de 198
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Structure on a slant submanifold of a contact manifold
(Indian National Science Academy, 2000-07)In this paper, we study the possibility of obtaining an induced contact metric structure on a slant submanifold of a contact metric manifold. We also give a characterization theorem for three-dimensional slant submanifolds.
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Existence and uniqueness theorem for slant immersions in Sasakian-space-forms
(Institute of Mathematics (University of Debrecen), 2001)In this paper, we present the existence and uniqueness theorems for slant immersions into Sasakian-space-forms. By applying ...
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The equivariant category of proper G-Spaces
(Rocky Mountain Mathematics Consortium, 2001) -
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The contact Whitney sphere
(Università del Salento, 2001)In this paper, we introduce the contact Whitney sphere as an imbedding of the n-dimensional unit sphere as an integral ...
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Exposición de curvas y superficies: una experiencia extraacadémica universitaria
(Asociación de Profesores de Matemáticas de Andalucía, 2001-02)En este artículo se comenta una experiencia extraacadémica realizada por un grupo de alumnos universitarios de Matemáticas, ...
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A digital index theorem
(World Scientific Publishing, 2001-11)This paper is devoted to prove a Digital Index Theorem for digital (n − 1)-manifolds in a digital space (Rn, f), where f ...
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Riemannian submersions and slant submanifolds
(Institute of Mathematics (University of Debrecen), 2002)We study the relationship between slant submanifolds in both Complex and Contact Geometry through Riemannian submersions. ...
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Sophus M. Lie
(Real Sociedad Matemática Española, 2002) -
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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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Minimal covers of open manifolds with half-spaces and the proper L-S category of product spaces
(Belgian Mathematical Society, 2002-09)Classical results about the Lusternik-Schnirelmann category of product spaces have their analogues in the category of ...
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Una visita a Planilandia
(Federacion Española de Sociedades de Profesores de Matemáticas, 2002-11) -
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Isogroups and isosubgroups
(Real Academia de Ciencias Exactas, Físicas y Naturales, 2003)The main goal of this paper is to give a mathematical foundation, serious and consistent, to some parts of Santilli’s ...
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Estudio de la Isotopología de Tsagas-Sourlas-Santilli
(Hadronic Press, 2003)Since his original proposal of 1978 to study Lie-isotopic and Lie-admissible liftings of conventional, local-differential ...
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Graphs associated with nilpotent Lie algebras of maximal rank
(European Mathematical Society, 2003)In this paper, we use the graphs as a tool to study nilpotent Lie algebras. It implies to set up a link between graph ...
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Homotopy in digital spaces
(Elsevier, 2003-01-15)The main contribution of this paper is a new “extrinsic” digital fundamental group that can be readily generalized to ...
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An obstruction to represent abelian lie algebras by unipotent matrices
(2004)The aim of this paper is the study of abelian Lie algebras as subalgebras of the nilpotent Lie algebra gn associated with ...
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Some inequalities on totally real submanifolds in locally conformal Kaehler space forms
(Korean Mathematical Society, 2004)In this article, we establish sharp relations between the sectional curvature and the shape operator and also between the ...
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Representation theory of some infinite-dimensional algebras arising in continuously controlled algebra and topology
(Springer, 2004)In this paper we determine the representation type of some algebras of infinite matrices continuously controlled at infinity ...
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Siete puentes, un camino: Königsberg
(Federacion Española de Sociedades de Profesores de Matemáticas, 2004-02)En este trabajo se presenta el problema de los puentes de Konigsberg, resuelto por Leonhard Euler, en 1735, como herramienta ...
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Digital homotopy with obstacles
(Elsevier, 2004-04-30)As a sequel of [4] Ayala, R., E. Dom´ıguez, A. R. Franc´es and A. Quintero, Homotopy in Digital Spaces, Discrete and Applied ...