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Ara es mostren els items 1-20 de 188

    • A combinatorial expression for the group inverse of symmetric M-matrices 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (De Gruytr, 2021-04-27)
      Article
      Accés obert
      By using combinatorial techniques, we obtain an extension of the matrix-tree theorem for general symmetric M-matrices with no restrictions, this means that we do not have to assume the diagonally domi nance hypothesis. We ...

    • A formula for the Kirchhoff index 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2007-09-30)
      Article
      Accés obert
      We show here that the Kirchhoff index of a network is the average of the Wiener capacities of its vertices. Moreover, we obtain a closed-form formula for the effective resistance between any pair of vertices when the ...

    • Application of the forces' method in dynamic systems 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2007-10-11)
      Article
      Accés obert
      We present here some applications of the Forces's method in dynamic systems. In particular, we consider the problem of the approximation of the trajectories of a conservative system of point masses by means of the minimization ...

    • Apuntes ACM 2018- Integración de línea y superfície 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-05)
      Report de recerca
      Accés obert

    • Apuntes ACM 2018-Extremos de funciones de varias variables 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-04)
      Report de recerca
      Accés obert

    • Apuntes ACM 2018-Integración Múltiple de Riemann 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-04)
      Report de recerca
      Accés obert

    • Apuntes ACM 2019- Álgebra lineal y geometría 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2019-02)
      Report de recerca
      Accés obert

    • Apuntes ACM-Álgebra lineal y geometría 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-02)
      Report de recerca
      Accés obert

    • Apuntes ACM2018 - Funciones de varias variables 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos (2018-03)
      Report de recerca
      Accés obert

    • Bisymmetric non-negative Jacobi matrix realizations 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José; Marijuan López, Carlos; Mitjana Riera, Margarida; Pisonero Pérez, Miriam (Taylor & Francis Group, 2023-12-21)
      Article
      Accés restringit per política de l'editorial
      Within the symmetric inverse eigenvalue problem, the case of bisymmetric Jacobi matrices occupies a central place, since for any strictly monotone list of n real numbers there exists a unique bisymmetric Jacobi matrix ...

    • Boundary value problems for Schrödinger operators on a path 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia (2012-05-25)
      Report de recerca
      Accés obert
      In this work, we concentrate on determining explicit expressions, via suitable orthogonal polynomials on the line, for the Green function associated with any regular boundary value problem on a weighted path, whose weights ...

    • Boundary value problems for Schrödinger operators on a Path Associated to Orthogonal Polynomials 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia (Springer, 2013)
      Capítol de llibre
      Accés restringit per política de l'editorial
      In this work, we concentrate on determining explicit expressions, via suitable orthogonal polynomials on the line, for the Green function associated with any regular boundary value problem on a weighted path, whose weights ...

    • Boundary value problems for second order linear difference equations: application to the computation of the inverse of generalized Jacobi matrices 

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (Springer, 2019-07-22)
      Article
      Accés obert
      We have named generalized Jacobi matrices to those that are practically tridiagonal, except for the two final entries and the two first entries of its first andits last row respectively. This class of matrices encompasses ...

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

      Encinas Bachiller, Andrés Marcos; Jiménez Jiménez, María José (2016)
      Text en actes de congrés
      Accés obert

    • 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
      Accés obert
      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 ...

    • Bounds on the first non-null eigenvalue for self-adjoint boundary value problems on networks 

      Bendito Pérez, Enrique; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gesto Beiroa, José Manuel (2006-09)
      Article
      Accés obert
      We aim here at obtaining bounds on the first non-null eigenvalue for self-adjoint boundary value problems on a weighted network by means of equilibrium measures, that includes the study of Dirichlet, Neumann and Mixed ...

    • CÀLCUL DIFERENCIAL | Parcial 2Q 

      Encinas Bachiller, Andrés Marcos; Carmona Mejías, Ángeles; Jiménez Jiménez, María José (Universitat Politècnica de Catalunya, 2024-04-05)
      Examen
      Accés restringit a la comunitat UPC

    • CÀLCUL INTEGRAL 

      Encinas Bachiller, Andrés Marcos (Universitat Politècnica de Catalunya, 2021-01-12)
      Examen
      Accés restringit a la comunitat UPC

    • CÀLCUL INTEGRAL 

      Encinas Bachiller, Andrés Marcos (Universitat Politècnica de Catalunya, 2020-10-27)
      Examen
      Accés restringit a la comunitat UPC

    • CÀLCUL INTEGRAL | EXTRAORDINARI 

      Encinas Bachiller, Andrés Marcos (Universitat Politècnica de Catalunya, 2021-07-05)
      Examen
      Accés restringit a la comunitat UPC