Browsing Artículos (Geometría y Topología) by Issue Date 

Browsing Artículos (Geometría y Topología) by Issue Date

Now showing items 21-40 of 192

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      Existence and uniqueness theorem for slant immersions in Sasakian-space-forms 

      Cabrerizo Jaraíz, José Luis; Carriazo Rubio, Alfonso; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (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 

      Ayala Gómez, Rafael; Fernández Lasheras, Francisco Jesús; Quintero Toscano, Antonio Rafael (Rocky Mountain Mathematics Consortium, 2001)
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      The contact Whitney sphere 

      Blair, David E.; Carriazo Rubio, Alfonso (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 

      Núñez Valdés, Juan; Aguilera, Carmen María; Fernández, María Inés; Macías, María José; Montaño, Ana C.; Pérez, Salvador; Rivero, Inmaculada; Romero, María José; Sánchez, José I.; Serrato, Ana María (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 

      Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Ayala Gómez, Rafael; Quintero Toscano, Antonio Rafael (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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      On the connectivity of skeletons of pseudomanifolds with boundary 

      Ayala Gómez, Rafael; Chávez de Diego, María José; Márquez Pérez, Alberto; Quintero Toscano, Antonio Rafael (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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      Sophus M. Lie 

      Núñez Valdés, Juan; Tenorio Villalón, Ángel Francisco (Real Sociedad Matemática Española, 2002)
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      Riemannian submersions and slant submanifolds 

      Cabrerizo Jaraíz, José Luis; Carriazo Rubio, Alfonso; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (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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      Minimal covers of open manifolds with half-spaces and the proper L-S category of product spaces 

      Cárdenas Escudero, Manuel Enrique; Fernández Lasheras, Francisco Jesús; Quintero Toscano, Antonio Rafael (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 

      Núñez Valdés, Juan; Ponce Escudero, Manuel (Federacion Española de Sociedades de Profesores de Matemáticas, 2002-11)
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      Isogroups and isosubgroups 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (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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      Graphs associated with nilpotent Lie algebras of maximal rank 

      Díaz Delgado, José Eduardo; Fernández Mateos, Rafael; Fernández Ternero, Desamparados; Núñez Valdés, Juan (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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      Estudio de la Isotopología de Tsagas-Sourlas-Santilli 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (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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      Homotopy in digital spaces 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Quintero Toscano, Antonio Rafael (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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      Some inequalities on totally real submanifolds in locally conformal Kaehler space forms 

      Carriazo Rubio, Alfonso; Kim, Young Ho; Yoon, Dae Won (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 

      Muro Jiménez, Fernando (Springer, 2004)
      In this paper we determine the representation type of some algebras of infinite matrices continuously controlled at infinity ...
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      An obstruction to represent abelian lie algebras by unipotent matrices 

      Benjumea Acevedo, Juan Carlos; Echarte Reula, Francisco Javier; Núñez Valdés, Juan; Tenorio Villalón, Ángel Francisco (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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      Siete puentes, un camino: Königsberg 

      Núñez Valdés, Juan; Alfonso Pérez, María; Bueno Guillén, Silvia; Diánez del Valle, María del Rocío; Elías Olivenza, María del Carmen de (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 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Quintero Toscano, Antonio Rafael (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 ...
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      Links among characteristically nilpotent, c-graded and derived filiform lie algebras 

      Benjumea Acevedo, Juan Carlos; Echarte Reula, Francisco Javier; Márquez García, María del Carmen; Núñez Valdés, Juan (2005)
      The aim of this paper is to study the interconnectivity among Lie algebras that are characteristically nilpotent, derived ...