Exploració per tema "Chebyshev polynomials"

Ara es mostren els items 1-8 de 8

    • Comparison of expansion-based explicit time-integration schemes for acoustic wave propagation 

      Spa, Carlos; Rojas, Otilio; Puente, Josep de la (Society of Exploration Geophysicists, 2020-04-14)
      Article
      Accés obert
      We have developed a von Neumann stability and dispersion analysis of two time-integration techniques in the framework of Fourier pseudospectral (PS) discretizations of the second-order wave equation. The first technique ...

    • Floquet theory for second order linear homogeneous difference equations 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2015-11-05)
      Article
      Accés obert
      In this paper we provide a version of the Floquet’s theorem to be applied to any second order difference equations with quasi-periodic coefficients. To do this we extend to second order linear difference equations with ...

    • Regular boundary value problems on a path throughout Chebyshev Polynomials 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2006-08)
      Article
      Accés obert
      In this work we study the different types of regular boundary value problems on a path associated with the Schrödinger operator. In particular, we obtain the Green function for each problem and we emphasize the case of ...

    • Second order linear difference equations 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2017-12-04)
      Article
      Accés obert
      We provide the explicit solution of a general second order linear difference equation via the computation of its associated Green function. This Green function is completely characterized and we obtain a closed expression ...

    • The group inverse of circulant matrices depending on four parameters 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José; Mitjana Riera, Margarida (De Gruytr, 2021-10-27)
      Article
      Accés obert
      Explicit expressions for the coefficients of the group inverse of a circulant matrix depending on four complex parameters are analytically derived. The computation of the entries of the group inverse are now reduced to the ...

    • The group inverse of circulant matrices with few parameters 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José; Mitjana Riera, Margarida (2021)
      Comunicació de congrés
      Accés obert
      The need of solving linear systems with circulant matrices occursin many problems related to the periodicity of that problem. This class ofsystem appears in many applications that range from numerical solution ofpartial ...

    • The group inverse of circulant matrices with few parameters 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José; Mitjana Riera, Margarida (2021)
      Text en actes de congrés
      Accés obert
      The need of solving linear systems with circulant matrices occurs in many problems related to the periodicity of that problem. This class of system appears in many applications that range from numerical solution of partial ...

    • The group inverse of extended symmetric and periodic Jacobi matrices 

      Gago Álvarez, Silvia (2016-02-02)
      Report de recerca
      Accés obert
      In this work, we explicitly compute the group inverse of symmetric and periodic Jacobi matrices with constant elements that have been extended by adding a row and a column conveniently de ned. For this purpose, we interpret ...