Now showing items 21-40 of 254

    • PhD Thesis
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      Transversalidad en 2-complejos 

      Villar Liñán, María Trinidad (1996)
      "Si bien el problema de la Transversalidad ha sido ampliamente estudiado en la Teoría de Grafos, los 2-complejos de Euler ...
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      On the locally finite chain algebra of a proper homotopy type 

      Baues, Hans Joachim; Quintero Toscano, Antonio Rafael (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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      On pseudo-Einstein hypersurfaces of ℋ2n+s 

      Cabrerizo Jaraíz, José Luis; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (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.
    • PhD Thesis
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      Clasificación de las álgebras de Lie filiformes complejas derivadas de otras álgebras 

      Ordóñez Sánchez, Manuel (1997)
      "El problema de la clasificación de las álgebras de Lie se reduce actualmente a la clasificación de las álgebras de Lie ...
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      On ξ-conformally flat contact metric manifolds 

      Zhen, Guo; Cabrerizo Jaraíz, José Luis; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (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 ...
    • PhD Thesis
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      Subvariedades Slant en variedades de contacto 

      Carriazo Rubio, Alfonso (1998-05-19)
      Las subvariedades slant constituyen un importante caso intermedio entre las subvariedades invariantes y anti-invariantes. ...
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      A contact version of B.-Y. Chen's inequality and its applications to slant immersions 

      Carriazo Rubio, Alfonso (Kyungpook National University, 1999)
      We establish a version of B.-Y. Chen’s inequality for a submanifold of a Sasakianspace-form, tangent to the structure ...
    • Article
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      Semi-slant submanifolds of a Sasakian manifold 

      Cabrerizo Jaraíz, José Luis; Carriazo Rubio, Alfonso; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (Springer, 1999-11)
      We define and study both bi-slant and semi-slant submanifolds of an almost contact metric manifold and, in particular, of ...
    • Article
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      Willmore Tori in a wide family of conformal structures on odd dimensional spheres 

      Cabrerizo Jaraíz, José Luis; Fernández Andrés, Manuel (Rocky Mountain Mathematics Consortium, 2000)
      We obtain a variable reduction principle for the Willmore variational problem in an ample class of conformal structures ...
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      Structure on a slant submanifold of a contact manifold 

      Cabrerizo Jaraíz, José Luis; Carriazo Rubio, Alfonso; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (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.
    • PhD Thesis
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      La sucesión de fibración homotópica de K-teorías asociada a la localización de categorías exactas 

      Cárdenas Escudero, Manuel Enrique (2001)
      En la tesis que se presenta se extienden fundamentalmente algunos resultados y metodologías de mediados de los años 80 y ...
    • PhD Thesis
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      Inmersiones de grafos en superficies y seudosuperficies con todos los vértices en una misma cara 

      Fedriani Martel, Eugenio Manuel (2001)
      La memoria se enmarca en la "Teoría de Inmersiones de Grafos en Superficies", presentando y resolviendo varios e interesantes ...
    • Article
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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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      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 ...
    • PhD Thesis
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      Clasificación de álgebras de Lie nilpotentes de rango maximal 

      Fernández Ternero, Desamparados (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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      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. ...