Now showing items 1-20 of 246

    • PhD Thesis
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      Invariantes integrales en grupos de Lie 

      Cabrerizo Jaraíz, José Luis (1973)
      En este trabajo, damos el cálculo de longitudes de curvas y n-medidas de n-superficies contenidas en un grupo de LIE, por ...
    • PhD Thesis
    • Article
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      Un ejemplo de teoría de bordismo equivalente al PL-bordismo 

      Quintero Toscano, Antonio Rafael (Academia de Ciencias Exactas, Físicas, Químicas y Naturales de Zaragoza, 1983)
      In this paper we define the CPL-manifolds and we prove, by using a desingularization procedure, that these objects give a ...
    • PhD Thesis
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      Estructuras polinómicas de tipo (h, k) 

      Fernández Andrés, Manuel (1985-05-02)
      En esta memoria se definen las estructuras polinómicas de tipo (h, k) como un campo tensorial f de tipo (1 1) no nulo de ...
    • Article
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      Doble suspensión de bolas de homología 

      Quintero Toscano, Antonio Rafael (Real Academia de Ciencias Exactas, Físicas y Naturales, 1986)
      Extendemos los teoremas de doble suspensión de Edwards y Cannon a ciertas bolas de homología simplemente conexas. Como ...
    • Article
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      A note on F-sectional curvatures of S-manifolds 

      Fernández Fernández, Luis Manuel (Real Academia de Ciencias de Zaragoza, 1987)
      This paper presents sorne characterizations of S-manifolds whose invariant f- sectional curvature is constant. The ...
    • PhD Thesis
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      Variedades con K-estructura subvariedades 

      Fernández Fernández, Luis Manuel (1987)
    • Article
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      Algunos resultados sobre el bordismo de variedades de homología 

      Quintero Toscano, Antonio Rafael (Real Academia de Ciencias Exactas, Físicas y Naturales, 1987)
      En este artículo probamos que las variedades de homología (HML-variedades) definen una teoría de bordismo singular que es ...
    • PhD Thesis
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      Ideales conmutativos en las álgebras de Lie resolubles y nilpotentes 

      López Garzón, Juan José (1987-05-27)
      En esta memoria que presentamos para optar al grado de Doctor, hemos estudiado diversos aspectos de las álgebras de Lie ...
    • Article
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      On totally geodesic invariant submanifolds of an S-manifold 

      Fernández Fernández, Luis Manuel (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, ...
    • Article
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      Exponential law for uniformly continous proper maps 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Quintero Toscano, Antonio Rafael (Universitat Autònoma de Barcelona, 1988)
      The purpose of this note is to prove the exponential law for uniformly continuous proper maps.
    • Article
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      Approximation axiomatique à la théorie du bordisme 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Quintero Toscano, Antonio Rafael (Université de Picardie Jules Verne, 1989)
      This paper gives an axiomatical approximation to Bordism Theory. It proves those properties of a geometrical nature that a class of models must satisfy to develop a bordism theory in an abstract category.
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      CR-products of S-manifolds 

      Fernández Fernández, Luis Manuel (Sociedade Portuguesa de Matemática, 1990)
      In this paper certain CR-submanifolds namely the CR-products, are studied. A characterization theorem is given and the case of CR-products of S-manifolds whose invariant f-sectional curvature is constant, is investigated.
    • Article
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      A note on the homotopical characterization of Rn 

      Ayala Gómez, Rafael; Quintero Toscano, Antonio Rafael (Universitat de Barcelona, 1992)
      This note gives conditions which assure that the one-point compactification of an open manifold is a manifold. This result is used to show that the homotopical characterization of Rn (n ≥ 4) can be derived from the Poincaré Conjecture.
    • Article
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      Lusternik-Schnirelmann invariants in proper homotopy theory 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Márquez Pérez, Alberto; Quintero Toscano, Antonio Rafael (University of California, 1992)
      We introduce and study proper homotopy invariants of the Lusternik-Schnirelmann type, p-cat (-), p-Cat(-), and cat e(-) ...
    • Article
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      A classification of totally F-umbilical submanifolds of an S-manifold 

      Cabrerizo Jaraíz, José Luis; Fernández Fernández, Luis Manuel; Fernández Andrés, Manuel (Soochow University, Department of Mathematics, 1992-04)
      In this note a classification theorem for totally f-umbilical submanifolds of an S-space form is obtained.
    • PhD Thesis
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      Algoritmos de cálculo de homología efectiva de los espacios clasificantes 

      Real Jurado, Pedro (1993)
      El propósito esencial de esta memoria es el de describir varios algoritmos de cálculo de homología efectiva de los espacios ...
    • Article
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      Characterization of complex filiform Lie algebras of dimension 0 according to whether they are or not derived from others 

      Echarte Reula, Francisco Javier; Gómez Martín, José Ramón; Núñez Valdés, Juan (Universidad de Zaragoza, 1993)
      In this paper, we characterize those Complex Filiform Lie Algeoras of dimension 0 which are derived from other Solvable ...
    • Article
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      On certain anti-invariant submanifolds of an S-manifold 

      Cabrerizo Jaraíz, José Luis; Fernández Fernández, Luis Manuel (Sociedade Portuguesa de Matemática, 1993)
      In this paper, the geometry of certain anti-invariant submanifolds of an S-manifold, namely those which are normal to the structure vector fields, is studied.
    • Presentation
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      On surfaces in digital topology 

      Ayala Gómez, Rafael; Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Quintero Toscano, Antonio Rafael; Rubio Sender, Julio (1995)
      In R. Ayala, E. Domínguez, A.R. Francés, A. Quintero, J. Rubio. A Polyhedral Approach to Digital Topology a new framework ...