Ponències/Comunicacions de congressos

Enviaments recents

  • 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 ...

  • Overdetermined partial resolvent kernel for generalized cylinders 

    Carmona Mejías, Ángeles; Jiménez Jiménez, María José (2021)
    Comunicació de congrés
    Accés obert
    Overdetermined partial boundary value problems are those where no data are prescribed onpart of the boundary, whereas both the values of the function and of its normal derivative aregiven on another part of the boundary. ...

  • 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 ...

  • On spectra of symmetric Jacobi matrices 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2021)
    Comunicació de congrés
    Accés obert
    A square symmetric matrix A is said bisymmetric if AS=SA, whereS is the matrix with ones along the secondary diagonal and zeroselsewhere. We denote by J(a,b) the real symmetric Jacobi matrixwith main ...

  • Perturbing networks 

    Mitjana Riera, Margarida; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2012)
    Comunicació de congrés
    Accés obert
    Semi-definite positive Schrödinger operators on finite connected networks are particular examples of a general class of self-adjoint operators called elliptic operators. Any elliptic operator defines an automorphism on the ...

  • The group inverse of some circulant matrices 

    Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2019)
    Text en actes de congrés
    Accés obert
    We present here necessary and sufficient conditions for the invertibility of some circulant matrices that depend on three parameters and moreover, we explicitly compute the inverse. Our study also encompasses a wide class ...

  • Eigenvalues with respect to a weight for discrete elliptic boundary value problems 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
    Text en actes de congrés
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  • Green functions for boundary value problems on product networks 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
    Text en actes de congrés
    Accés obert

  • Generalizing the bottleneck matrix 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (2019)
    Text en actes de congrés
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    Given the Laplacian matrix associated to a weighted graph and given x a single vertex of it, the bottleneck matrix (related to x) is the inverse matrix of the sub matrix of the Laplacian obtained by eliminating the row ...

  • Discrete trace function and Poincaré inequality for the study of some linear systems 

    Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
    Text en actes de congrés
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  • Green’s kernel of Schrödinger operators on generalized subdivision networks 

    Carmona Mejías, Ángeles; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (2017)
    Text en actes de congrés
    Accés obert

  • Computing the Green function for a Dirichlet problem on spider networks 

    Carmona Mejías, Ángeles; Mitjana Riera, Margarida (2018)
    Text en actes de congrés
    Accés obert

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