Now showing items 1-20 of 58

    • Acte de reconeixement al professor Sebastià Xambó a l'FME 

      Xambó Descamps, Sebastián; Pagès Fita, Jaume; Ras Sabido, Antoni; Bruna, Joaquim; Franch Bullich, Jaume; Campillo, Antonio; Mitjana Riera, Margarida; Udina, Manuel; Miret Biosca, Josep M.; Eixarch, Ramon (2015-09-15)
      Audiovisual
      Open Access
      La Facultat de Matemàtiques i Estadística de la UPC organitza un acte de reconeixement a la trajectòria acadèmica del professor Sebastià Xambó, que fou degà de l'FME des de l'any 2003 fins l'any 2009. L'acte tindrà lloc ...
    • Computing the Green function for a Dirichlet problem on spider networks 

      Carmona Mejías, Ángeles; Mitjana Riera, Margarida (2018)
      Conference report
      Open Access
    • Curs de matemàtiques : àlgebra lineal i càlcul infinitesimal : quadern de pràctiques amb ordinador 

      Ferrer Biosca, Alberto; Guillamon Grabolosa, Antoni; Mitjana Riera, Margarida; Rodríguez Jordana, Juan; Serrat Piè, Carles (Universitat Politècnica de Catalunya, 1996)
      Lecture notes
      Open Access
    • Cycles in the cycle prefix digraph 

      Comellas Padró, Francesc de Paula; Mitjana Riera, Margarida (2000)
      Article
      Open Access
      Cycle prefix digraphs are a class of Cayley coset graphs with many remarkable properties such as symmetry, large number of nodes for a given degree and diameter, simple shortest path routing, Hamiltonicity, optimal ...
    • Discrete trace function and Poincaré inequality for the study of some linear systems 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
      Conference report
      Open Access
    • Effective resistances and Kirchhoff index in subdivision networks 

      Carmona Mejías, Ángeles; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (Taylor & Francis, 2016-11-12)
      Article
      Open Access
      We define a subdivision network ¿S of a given network ¿; by inserting a new vertex in every edge, so that each edge is replaced by two new edges with conductances that fulfill electrical conditions on the new network. In ...
    • Effective resistances and Kirchhoff index in subdivision networks 

      Carmona Mejías, Ángeles; Monsó Burgués, Enrique P.J.; Mitjana Riera, Margarida (2016)
      Conference report
      Restricted access - publisher's policy
      In this work we compute the effective resistances and the Kirchhoff Index of subdivision networks in terms of the corresponding parameters of the original network. Our techniques are based on the study of discrete operators ...
    • Eigenvalues with respect to a weight for discrete elliptic boundary value problems 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
      Conference report
      Open Access
    • El espectro del digrafo mariposa 

      Comellas Padró, Francesc de Paula; Fiol Mora, Miquel Àngel; Gimbert, Joan; Mitjana Riera, Margarida (A. Márquez, 2002-09)
      Conference report
      Open Access
      La determinación del espectro de un grafo es de interés por la conexión que los autovalores y sus multiplicidades tienen con invariantes y propiedades topológicas del grafo, como el diámetro, conectividad, expansión, ...
    • Fonaments d'estadística aplicada : pràctiques amb Minitab 

      Ferrer Biosca, Alberto; Guillamon Grabolosa, Antoni; Mitjana Riera, Margarida; Rodríguez Jordana, Juan; Serrat Piè, Carles (Universitat Politècnica de Catalunya, 1997)
      Practice
      Open Access
    • Funciones de green en redes producto 

      Arauz Lombardía, Cristina; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (Universidad de Cádiz, 2017)
      Conference report
      Restricted access - publisher's policy
      En esta comunicación presentaremos la versión discreta del método de separación de variables para determinar la función de Green de redes producto en términos de la función de Green de uno de las redes factores y los ...
    • Generalized linear polyominoes, Green functions and Green matrices 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2012)
      Conference lecture
      Open Access
      In this work we derive the Creen function of a generalized linear Polyomino as a suitable perturbation of the Creen function of a Hamiltonian path on it. So, our study encompasses previous work:; on polyomino-like chains.
    • Generalizing the bottleneck matrix 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (2019)
      Conference report
      Open Access
      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 ...
    • Gossiping in chordal rings under the line model 

      Barrière Figueroa, Eulalia; Cohen, Johanne; Mitjana Riera, Margarida (2000)
      Article
      Open Access
      The line model assumes long distance calls between non neighboring processors. In this sense, the line model is strongly related to circuit-switched networks, wormhole routing, optical networks supporting wavelength ...
    • Green functions for boundary value problems on product networks 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2019)
      Conference report
      Open Access
    • Green functions on product networks 

      Arauz Lombardía, Cristina; Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (2018-01-01)
      Article
      Open Access
      We aim here at determining the Green function for general Schrödinger operators on product networks. The first step consists in expressing Schrödinger operators on a product network as sum of appropriate Schrödinger operators ...
    • Green matrices associated with generalized linear polyominoes 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Mitjana Riera, Margarida (Elsevier, 2015)
      Article
      Open Access
      A polyomino is an edge-connected union of cells in the planar square lattice. Here we consider generalized linear polyominoes; that is, the polyominoes supported by an n × 2 lattice. In this paper, we obtain the ...
    • Green operators of networks with a new vertex 

      Carmona Mejías, Ángeles; Encinas Bachiller, Andrés Marcos; Gago Álvarez, Silvia; Mitjana Riera, Margarida (Elsevier, 2016-02)
      Article
      Open Access
      Any elliptic operator defines an automorphism on the orthogonal subspace to the eigenfunctions associated with the lowest eigenvalue, whose inverse is the orthogonal Green operator. In this study, we show that elliptic ...
    • Green's function in partial subdivision networks 

      Carmona Mejías, Ángeles; Mitjana Riera, Margarida; Monsó Burgués, Enrique P.J. (Taylor & Francis, 2018-07-24)
      Article
      Open Access
      In the present work, we define a partial subdivision network of a given network G, by inserting a new vertex in some selected edges of G, so that each of these edges is replaced by two new edges with conductances that ...
    • 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