Browsing by Author "Mitjana Riera, Margarida"
Now showing items 1-20 of 157
-
A combinatorial expression for the group inverse of symmetric M-matrices
(De Gruytr, 2021-04-27)
Article
Open AccessBy 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 ... -
Acte de reconeixement al professor Sebastià Xambó a l'FME
(2015-09-15)
Audiovisual
Open AccessLa 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 ... -
Àlgebra lineal i càlcul infinitesimal
(Universitat Politècnica de Catalunya, 2003)
Lecture notes
Open Access -
Àlgebra lineal i Càlcul infinitesimal. Quadern de pràctiques amb ordinador
(Universitat Politècnica de Catalunya, 1996)
Lecture notes
Open Access -
Computing the Green function for a Dirichlet problem on spider networks
(2018)
Conference report
Open Access -
Curs d'introducció a l'arquitectura tècnica. Matemàtiques
(Universitat Politècnica de Catalunya, 2001)
Lecture notes
Open Access -
Curs de matemàtiques : àlgebra lineal i càlcul infinitesimal : quadern de pràctiques amb ordinador
(Universitat Politècnica de Catalunya, 1996)
Lecture notes
Open Access -
Cycles in the cycle prefix digraph
(2000)
Article
Open AccessCycle 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
(2019)
Conference report
Open Access -
Effective resistances and Kirchhoff index in subdivision networks
(2016)
Conference report
Restricted access - publisher's policyIn 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 ... -
Effective resistances and Kirchhoff index in subdivision networks
(Taylor & Francis, 2016-11-12)
Article
Open AccessWe 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 ... -
Eigenvalues with respect to a weight for discrete elliptic boundary value problems
(2019)
Conference report
Open Access -
Eigenvalues with respect to a weight for general boundary value problems on networks
(Elsevier, 2021-04-01)
Article
Restricted access - publisher's policyIn this work we analyze self-adjoint boundary value problems on networks for Schrödinger operators, in which a part of the boundary with a Neumann condition is always considered. We first characterize when the energy is ... -
El espectro del digrafo mariposa
(A. Márquez, 2002-09)
Conference report
Open AccessLa 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
(Universitat Politècnica de Catalunya, 1997)
Practice
Open Access -
Funciones de green en redes producto
(Universidad de Cádiz, 2017)
Conference report
Restricted access - publisher's policyEn 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
(2012)
Conference lecture
Open AccessIn 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
(2019)
Conference report
Open AccessGiven 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
(2000)
Article
Open AccessThe 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
(2019)
Conference report
Open Access
