Ara es mostren els items 27-30 de 30

    • Simultaneous versal deformations of endomorphisms and invariant subspaces 

      Compta Creus, Albert; Helmke, Uwe; Peña Carrera, Marta; Puerta Coll, Xavier (2004)
      Article
      Accés obert
      We study the set M of pairs (f; V ), defined by an endomorphism f of Fn and a d- dimensional f–invariant subspace V . It is shown that this set is a smooth manifold that defines a vector bundle on the Grassmann manifold. ...
    • State canonical form for a class of uncontrollable linear systems 

      Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Taylor & Francis, 2019-10-16)
      Article
      Accés obert
      We tackle the obtaining of canonical forms for classifying linear control systems with regard to changes in the state variables. Although it was solved in the 1980s for controllable systems, it is still an open problem for ...
    • Structural stability of (C,A)-marked and observable subspaces 

      Compta Creus, Albert; Peña Carrera, Marta (2005)
      Article
      Accés obert
      Given an observable pair of matrices (C;A) we consider the manifold of (C;A)-invariant and observable subspaces having a fixed Brunovsky- Kronecker structure. Using Arnold’s techniques we obtain the explicit form of a ...
    • Use of reduced forms in the disturbance decoupling problem 

      Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Elsevier, 2009-03)
      Article
      Accés restringit per política de l'editorial
      Specific algorithms, such as those involving the supremal of the invariant subspaces contained in a suitable subspace, are known to be able to test whether a disturbance decoupling problem (DDP) is solvable. Here, by ...