Now showing items 41-60 of 185

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      Extension of Santilli's isotopies to non-injective isoalgebras 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Kyungnam University Press, 2005)
      Santilli's isotopies constitute a new branch of mathematics characterized by axiom-preserving isotopic lifting of units, ...
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      Minimal slant submanifolds of the smallest dimension in S-manifolds 

      Carriazo Rubio, Alfonso; Fernández Fernández, Luis Manuel; Hans Uber, María Belén (European Mathematical Society, 2005)
      We study slant submanifolds of S-manifolds with the smallest dimension, specially minimal submanifolds and establish some ...
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      The Gauss-Landau-Hall problem on Riemannian surfaces 

      Barros Díaz, Manuel; Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel; Romero Sarabia, Alfonso (AIP Publishing, 2005)
      We introduce the notion of Gauss-Landau-Hall magnetic field on a Riemannian surface. The corresponding Landau-Hall problem ...
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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 ...
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      Nullification functors and the homotopy type of the classifying space for proper bundles 

      Flores Díaz, Ramón Jesús (Mathematical Sciences Publishers, 2005-09)
      Let G be a discrete group for which the classifying space for proper G-actions is finite-dimensional. We find a space W ...
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      A particular case of extended isotopisms: Santilli's isotopisms 

      Falcón Ganfornina, Raúl Manuel; Núñez Valdés, Juan (Hadronic Press, 2006)
      Due to a mathematical necessity, it has been proved that it is convenient to give a new interpretation of the multiplicity ...
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      ¿Ganará alguna vez algún número, por ejemplo, el ocho, el Premio Pinocho? 

      Núñez Valdés, Juan (Sociedad Andaluza de Educación Matemática Thales, 2006)
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      On the functoriality of cohomology of categories 

      Muro Jiménez, Fernando (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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      Simply connected lie subgroups of the unipotent Lie group of order 4 

      Benjumea Acevedo, Juan Carlos; Echarte Reula, Francisco Javier; Núñez Valdés, Juan; Tenorio Villalón, Ángel Francisco (Soochow University, Department of Mathematics, 2006-04)
      In this paper we obtain simply connected Lie subgroups (up to isomorphism) of the Lie group G4 of upper triangular matrices ...
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      A constructive method to determine the variety of filiform Lie algebras 

      Echarte Reula, Francisco Javier; Márquez García, María del Carmen; Núñez Valdés, Juan (Institute of Mathematics, Czech Academy of Sciences, 2006-12)
      In this paper we use cohomology of Lie algebras to study the variety of laws associated with filiform Lie algebras of a ...
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      New relationships involving the mean curvature of slant submanifolds in S-space-forms 

      Fernández Fernández, Luis Manuel; Hans Uber, María Belén (Korean Mathematical Society, 2007)
      Relationships between the Ricci curvature and the squared mean curvature and between the shape operator associated with ...
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      Sophus Lie: un matemático visionario 

      Núñez Valdés, Juan; Tenorio Villalón, Ángel Francisco; Martín Molina, Verónica (2007)
      A diferencia de una mera exposici´on de datos puramente biogr´aficos, este art´ıculo pretende dar a conocer a cualquier ...
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      Massless particles in three-dimensional Lorentzian warped products 

      Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel; Ortega Titos, Miguel (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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      Amalgamated products and properly 3-realizable groups 

      Cárdenas Escudero, Manuel Enrique; Fernández Lasheras, Francisco Jesús; Quintero Toscano, Antonio Rafael; Repovš, Dušan (Elsevier, 2007-01)
      In this paper, we show that the class of all properly 3-realizable groups is closed under amalgamated free products (and ...
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      La banda de Möbius: un camino que te llevará de cabeza 

      Granados Pérez, Ana Belén; Grau de la Herrán, Ana; Núñez Valdés, Juan (Federacion Española de Sociedades de Profesores de Matemáticas, 2007-02)
      Este artículo se ha escrito con el objetivo de mostrar la superficie geométrica denominada banda de Möbius como herramienta ...
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      Un divertido juego inventado por un matemático infeliz 

      Aranda Colubi, Belén; Elías Olivencia, María del Carmen de; Núñez Valdés, Juan (Sociedad Canaria Isaac Newton de Profesores de Matemáticas, 2007-03)
      En este artículo se presenta la posibilidad de introducir algunos temas de Matemáticas de Secundaria o Bachillerato, como ...
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      Nullification and cellularization of classifying spaces of finite groups 

      Flores Díaz, Ramón Jesús (American Mathematical Society, 2007-04)
      In this note we discuss the effect of the BZ/p-nullification PBZ/p and the BZ/p-cellularization CWBZ/p over classifying ...
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      B.-Y. Chen's inequality for submanifolds of generalized space forms 

      Alegre Rueda, Pablo Sebastián; Carriazo Rubio, Alfonso; Kim, Young Ho; Yoon, Dae Won (Indian National Science Academy, 2007-06)
      In this article, we investigate sharp inequalities involving δ-invariants for submanifolds in both generalized complex space forms and generalized Sasakian space forms, with arbitrary codimension.
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      ¿Conocía Sherlock Holmes la teoría de grafos? 

      Canto Martín, Francisco Manuel; Núñez Valdés, Juan; Ruiz Cabello, Serafín (Federación Iberoamericana de Educación Matemática, 2007-06)
      En este artículo se muestran las ventajas que ofrece la Teoría de Grafos a la hora de resolver determinados problemas ...
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      Magnetic vortex filament flows 

      Barros Díaz, Manuel; Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel; Romero Sarabia, Alfonso (AIP Publishing, 2007-08)
      We exhibit a variational approach to study the magnetic flow associated with a Killing magnetic field in dimension 3. In ...