Now showing items 1-20 of 35

• #### Bounding the distance from a reachable/controllable equisingular switched linear system to the set of non-reachable/uncontrollable ones ﻿

(2016)
Article
Open Access
No necessary and sufficient condition for reachability of switched linear singular systems has been found in general, but only in the case of the so-called “equisingular systems”. In this case, it is possible to obtain an ...
• #### Controllability invariant subspaces for switched linear systems ﻿

(2019)
Conference report
Restricted access - publisher's policy
We generalize controllability invariantsuspaces of switched linear systems, a class of hy-brid systems which consists of a finite number ofcontinuous-time systems and a rule which orchestratesthe switching between them
• #### Controllability of second-order switched linear systems ﻿

(2011-10)
External research report
Open Access
We consider second-order switched linear systems and obtain sufficient conditions for such systems to be controllable.
• #### Códigos monomiales vistos como subespacios vectoriales invariantes ﻿

(2015)
Conference report
Open Access
Es bien sabido que los códigos cíclicos son muy útiles en aplicaciones en general y a los criptosistemas en particular, ya que no resultan costosos desde un punto de vista computacional, además estos códigos alcanzan la ...
• #### Cyclic codes as hyperinvariant subspaces ﻿

(2013)
Conference report
Open Access
It is known the relationship between cyclic codes and invariant subspaces. We present in this work some codes which are obtained from invariant and hyperinvariant subspaces of the linear maps having associated matrices, ...
• #### D-stratification and hierarchy graphs of the space of order 2 and 3 matrix pencils ﻿

(Universal Journal of Mathematics and Applications, 2019)
Article
Open Access
Small changes in the entries of a matrix pencil may lead to important changes in its Kronecker normal form. Studies about the effect of small perturbations have been made when considering the stratification associated with ...
• #### Deformaciones miniversales de parejas de tensores de segundo orden ﻿

Conference report
Open Access
Consideramos en el espacio de parejas de tensores tension y deformacion la relacion de equivalencia que se corresponde con cambios de base ortonormales. Identificandolas con parejas de matrices cuadradas, podemos utilizar ...
• #### Differentiable families of planar bimodal linear control systems ﻿

(2014-06)
Article
Open Access
We consider bimodal linear control systems consisting of two subsystems acting on each side of a given hyperplane, assuming continuity along it. For a differentiable family of planar bimodal linear control systems, we ...
• #### Differentiable families of stabilizers for planar bimodal linear control systems ﻿

(American Institute of Physics (AIP), 2013)
Conference report
Open Access
We consider bimodal linear control systems consisting of two subsystems acting on each side of a given hyperplane, assuming continuity along the separating hyperplane. For a differentiable family of controllable planar ...
• #### Distance from a controllable switched linear system to an uncontrollable one ﻿

(Servicio de publicaciones de la UPV, 2010)
Conference lecture
Open Access
The set of controllable switched linear systems is an open set in the space of all switched linear systems. Then it makes sense to compute the distance from a controllable switched linear system to the set of uncontrollable ...
• #### Eigenvalues and eigenvectors of monomial matrices ﻿

Conference report
Open Access
Spectral properties of special matrices matrices have been widely applied. We focus on monomial matrices over a finite field $F_{p}$, $p \neq 2$. We describe a way to find the minimal annihilating polynomial, a set of ...
• #### Eigenvectors of permutation matrices ﻿

(2015)
Article
Open Access
The spectral properties of special matrices have been widely studied, because of their applications. We focus on permutation matrices over a finite field and, more concretely, we compute the minimal annihilating polynomial, ...
• #### Eines d'àlgebra lineal i matricial per a l'enginyeria ﻿

(2014)
Book
Open Access
• #### Entorn del desenvolupament històric de les equacions algebraiques ﻿

(2005)
Article
Open Access
El conjunt dels nombres enters i el de polinomis amb coeficients en un cos són els exemples més bàsics d’anells commutatius, que constitueixen l’essència de l’àlgebra commutativa, branca de les matemàtiques estretament ...
• #### Estimating distances from quadruples satisfying stability properties to quadruples not satisfying them ﻿

(2000)
Article
Open Access
We consider quadruples of matrices (E,A,B,C) defining generalized linear multivariable time-invariant dynamical systems, with E,A square matrices and B, C rectangular matrices. Using geometrical techniques we present ...
• #### Familias diferenciables de inversas de Drazin ﻿

(2005)
Article
Open Access
Las inversas de Drazin son una clase de inversa generalizada entre cuyas aplicaciones podemos mencionar la resoluci´on de ecuaciones diferenciales, ecuaciones en diferencias, estudio de cadenas de Markov, etc. En esta ...
• #### Forma reduïda de Jordan : aplicacions ﻿

(Edicions UPC, 1997)
Book
La forma reduïda de Jordan té un paper fonamental en la classificació d'endoformismes i és extramadament important en la Matemàtica Aplicada, ja que dóna resposta a qüestions relatives a una gran diversitat d'aplicacions. ...
• #### Higher-Order Singular Systems and Polynomial Matrices ﻿

(2005)
Article
Open Access
There is a one-to-one correspondence between the set of quadruples of matrices defining singular linear time-invariant dynamical systems and a subset of the set of polynomial matrices. This correspondence preserves the ...
• #### Introducción a la teoría de matrices polinomiales ﻿

(Edicions UPC, 1999)
Book