Now showing items 1-18 of 18

  • Bounded solutions of second order lineal difference equations with periodic coefficients 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2016)
    Conference report
    Open Access
  • Bounded solutions of self-adjoint second order linear difference equations with periodic coefficients 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2018-02-25)
    Article
    Open Access
    In this work we obtain easy characterizations for the boundedness of the solutions of the discrete, self–adjoint, second order and linear unidimensional equations with periodic coefficients, including the analysis of the ...
  • Cálculo de la inversa de una matriz de Jacobi 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (Universidad de Cádiz, 2017)
    Conference report
    Restricted access - publisher's policy
    En este trabajo aportamos las condiciones necesarias y suficientes para la invertibilidad de las matrices de Jacobi y calculamos explícitamente su inversa. Las técnicas que utilizamos están relacionadas con la soluciones ...
  • Combinatorial recurrences and linear difference equations 

    Jiménez Jiménez, María José; Encinas Bachiller, Andrés Marcos (2016)
    Conference report
    Restricted access - publisher's policy
    In this work we introduce the triangular arrays of depth greater than 1 given by linear recurrences, that generalize some well-known recurrences that appear in enumerative combinatorics. In particular, we focussed on ...
  • Combinatorial recurrences and linear difference equations 

    Jiménez Jiménez, María José; Encinas Bachiller, Andrés Marcos (2016-10-17)
    Article
    Open Access
    In this work we introduce the triangular arrays of depth greater than 1 given by linear recurrences, that generalize some well known recurrences that appear in enumerative combinatorics. In particular, we focussed on ...
  • Ecuaciones en diferencias lineales de segundo orden y su aplicación al análisis matricial 

    Jiménez Jiménez, María José (Universitat Politècnica de Catalunya, 2016-02-04)
    Doctoral thesis
    Open Access
    It is well known the important role that difference equations play in several problems of the engineering or of the science. However, whereas the expression of the solutions when the coefficients of the equations are ...
  • Explicit inverse of a tridiagonal (p,r)-Toeplitz matrix 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2016)
    Conference report
    Open Access
  • Explicit inverse of a tridiagonal (p,r)-Toeplitz matrix 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (Elsevier, 2018-04-01)
    Article
    Open Access
    We have named tridiagonal (p,r)–Toeplitz matrix to those tridiagonal matrices in which each diagonal is a quasi–periodic sequence, d(p+j)=rd(j), so with period p¿N but multiplied by a real number r. We present here the ...
  • Explicit inverse of a tridiagonal (p,r)-Toeplitz matrix 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2016)
    Conference report
    Open Access
  • Explicit inverse of nonsingular Jacobi matrices 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2019-03-22)
    Article
    Restricted access - publisher's policy
    We present here the necessary and sufficient conditions for the invertibility of tridiagonal matrices, commonly named Jacobi matrices, and explicitly compute their inverse. The techniques we use are related with the solution ...
  • Floquet theory for second order linear homogeneous difference equations 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2015-11-05)
    Article
    Open Access
    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 ...
  • Green's function of a weighted $n$-cycle 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia; Jiménez Jiménez, María José; Mitjana Riera, Margarida (2016)
    Conference report
    Open Access
  • Pràctiques amb ordinador semipresencials: eina d'aprenentatge 

    Sabater Pruna, M. Assumpta; Álvarez Quetglas, María José; Forcada Plaza, Santiago; Jiménez Jiménez, María José; Monsó Burgués, Enrique P.J.; Navarro Gonzalo, M. Teresa; Rallo Capdevila, Miguel; Muñoz i Garcia, Cristina (2009-02-12T13:27:15Z)
    Conference lecture / Conference report
    Open Access
    El projecte d’innovació docent que es presenta té per objectiu incorporar pràctiques amb ordinador semipresencials en el procés d’aprenentatge. S’explora aquesta modalitat en la recerca de combinacions per al ...
  • Second order linear difference equations 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2017-12-04)
    Article
    Open Access
    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 ...
  • Teoría de Floquet para ecuaciones en diferencias lineales de segundo orden y homogéas 

    Jiménez Jiménez, María José (Editorial Universidad de Almería, 2015)
    Conference lecture
    Restricted access - publisher's policy
    En este trabajo aportamos una versión del teorema de Floquet aplicable a cualquier ecuación en diferencias lineal de segundo orden con coeficientes casi–periódicos. Obtenemos que este tipo de ecuaciones son equivalentes ...
  • The inverses of some circulant matrices 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia; Jiménez Jiménez, María José; Mitjana Riera, Margarida (2015-11-01)
    Article
    Open Access
    We present here necessary and su cient conditions for the invertibility of circulant and symmetric matrices that depend on three parameters and moreover, we explicitly compute the inverse. The techniques we use are related ...
  • Triangular matrices and combinatorial recurrences 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2017)
    Conference report
    Restricted access - publisher's policy
  • Triangular sequences, combinatorial recurrences and linear difference equations 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (Elsevier, 2018-10-22)
    Article
    Open Access
    In this work we introduce the triangular double sequences of arbitrary order given by linear recurrences, that generalize some well-known recurrences that appear in enumerative com- binatorics. ...