Enviaments recents

  • Order regularity for Birkhoff interpolation with lacunary polynomials 

    Palacios Quiñonero, Francisco; Rubio Díaz, Pedro; Díaz Barrero, José Luis; Rossell Garriga, Josep Maria (2011-06-01)
    Article
    Accés obert
    In this short paper we present sufficient conditions for the order regularity problem in Birkhoff interpolation with lacunary polynomials. These conditions are a generalization of the Atkinson-Sharma theorem.
  • Spectral analysis of the Beznar dam accelerogram. Comparison with results in the northeastern of Spain 

    Canas Torres, José Antonio; Barbat Barbat, Horia Alejandro; Pujades Beneit, Lluís; Egozcue Rubí, Juan José; Sarrate Ramos, Josep (1991-12)
    Article
    Accés obert
    Numerical analysis applied to the Beznar dam accelerograms (longitudinal and transversal components) shows that the Fourier amplitude spectrum is a good approximation to the pseudo-velocity spectra. Thís fact makes possible ...
  • Solution to problem 3795 

    Díaz Barrero, José Luis (2015-01)
    Article
    Accés restringit per política de l'editorial
  • Problem 1039: a constrained rational inequality 

    Díaz Barrero, José Luis (The Mathematical Association of America, 2014-11)
    Article
    Accés restringit per decisió de l'autor
  • Just apply the AM-GM 

    Díaz Barrero, José Luis; Gispert Sánchez, Francesc (2015-02)
    Article
    Accés restringit per decisió de l'autor
  • Problem B-1162: a bound for a sum of square roots 

    Díaz Barrero, José Luis (2015-02)
    Article
    Accés restringit per decisió de l'autor
  • Problem 5334: A sum of products 

    Díaz Barrero, José Luis (John Wiley & Sons, 2015-01)
    Article
    Accés restringit per decisió de l'autor
  • Solution to problem 5317 

    Díaz Barrero, José Luis (John Wiley & Sons, 2015-01)
    Article
    Accés restringit per decisió de l'autor
  • El sistema alimentario global: I - definición de un espacio 

    Clotet, Ramon; Colomer Xena, Yvonne; Jarauta Bragulat, Eusebio; Mayor Zaragoza, Federico (MINISTERIO DE AGRICULTURA, PESCA Y ALIMENTACION., 2013-10)
    Article
    Accés obert
    Los autores desarrollan su modelo de sistema alimentario global, presentado conceptualmente en anteriores publicaciones, basado en cuatro ejes básicos (disponibilidad, economía, política y saber) dándole una estructura ...
  • Zero and coefficient inequalities for hyperbolic polynomials 

    Rubió Massegú, Josep; Díaz Barrero, José Luis; Rubio Díaz, Pedro (2006-03)
    Article
    Accés obert
    In this paper using classical inequalities and Cardan-Viète formulae some inequalities involving zeroes and coefficients of hyperbolic polynomials are given. Furthermore, considering real polynomials whose zeros lie in ...

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