Exploració per autor "Compta Creus, Albert"
Ara es mostren els items 6-25 de 30
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Càlcul integral per a enginyers
Compta Creus, Albert; Bonet Revés, Carles; Consul Porras, M. Nieves; Ollé Torner, Mercè; Roig Martí, Agustín (Universitat Politècnica de Catalunya, 2002)
Llibre
Accés restringit a la comunitat UPCEl càlcul integral és una matèria bàsica dins els plans d'estudis de les enginyeries i les llicenciatures científiques. Aquest llibre és una introducció a la teoria de la integració de diverses variables i la integració ... -
Classi fication of monogenic invariant subspaces and uniparametric linear control systems
Compta Creus, Albert; Ferrer Llop, Josep (2012-12)
Report de recerca
Accés obertThe classification of the invariant subspaces of an endomorphism has been an open problem for a long time, and it is a ”wild” problem in the general case. Here we obtain a full classification for the monogenic ones. Some ... -
Consideraciones en torno al problema del desacoplamiento
Clotet Juan, Josep; Compta Creus, Albert (2005)
Article
Accés obert -
Contribució a l'estudi geomètric de subespais invariants respecte a transformacions i sistemes lineals
Compta Creus, Albert (Universitat Politècnica de Catalunya, 2001-10-19)
Tesi
Accés obertMitjançant tècniques geomètriques, abordem les qüestions següents:<br/><br/>(i) Estudi (caracterització, classificació, famílies diferenciables,...) d'una classe destacada de subespais invariants, els anomenats ... -
Dimension of the orbit of marked subspaces
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2004)
Article
Accés obertGiven a nilpotent endomorphism, we consider the manifold of invariant subspaces having a fixed Segre characteristic. In [Linear Algebra Appl., 332–334 (2001) 569], the implicit form of a miniversal deformation of an ... -
Geometric classification of monogenic subspaces and uniparametric linear control systems
Compta Creus, Albert; Ferrer Llop, Josep (Taylor & Francis, 2015)
Article
Accés obertWe present a geometric approach to the classification of monogenic invariant subspaces, alternative to the classical algebraic one, which allows us to obtain several matricial canonical forms for each class. Some applications ... -
Geometric structure of single/combined equivalence classes of a controllable pair
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2011-11)
Article
Accés obertGiven a pair of matrices representing a controllable linear system, its equivalence classes by the single or combined action of feedbacks, change of state and input variables, as well as their intersection are studied. ... -
Geometric structure of the equivalence classes of a controllable pair
Peña Carrera, Marta; Compta Creus, Albert; Ferrer Llop, Josep (2010)
Comunicació de congrés
Accés obertGiven a pair of matrices representing a controllable linear system, we study its equivalence classes by the single or combined action of feedbacks and change of state and input variables, as well as their intersections. ... -
Local differentiable pole assignment
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Taylor & Francis, 2010)
Article
Accés obertGiven a general local differentiable family of pairs of matrices, we obtain a local differentiable family of feedbacks solving the pole assignment problem, that is to say, shifting the spectrum into a prefixed one. We ... -
Matricial realizations of the solutions of the Carlson problem
Compta Creus, Albert; Ferrer Llop, Josep (2001)
Article
Accés obertThe Klein theorem asserts the existence of a solution of the Carlson problem when a related Littelewood-Richardson sequence exists. Here we present an explicit construction of these matricial solutions. -
Miniversal deformations of marked matrices
Compta Creus, Albert; Ferrer Llop, Josep; Puerta Sales, Ferran (2001)
Article
Accés obertGiven the set of square matricesM⊂Mn+m(C) that keep the subspace W = Cnx{0} ⊂ Cn+m invariant, we obtain the implicit form of a miniversal deformation of a matrix a∈M, and we compute it explicitely when this matrix is ... -
Miniversal deformations of observable marked matrices
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2014)
Article
Accés restringit per política de l'editorialGiven the set of vertical pairs of matrices ${\cal M}\subset M_{m,n}(\mathbb C)\times M_n(\mathbb C)$ keeping the subspace $\mathbb C^d\times\{0\}\subset\mathbb C^n$ invariant,we compute miniversal deformations of a given ... -
Miniversal deformations of observable marked matrices
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2012)
Report de recerca
Accés obertGiven the set of vertical pairs of matrices M¿ Mm,n(C)×Mn(C) keeping the subspace Cd×{0} ¿ Cn invariant, we compute miniversal deformations of a given pair when it is observable and the subspace Cd × {0} is marked. ... -
On the effect of friend feedbacks
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2009)
Article
Accés obertGiven S an (A;B)-invariant subspace, we prove that the set of friend feedbacks is a (nm¡md+dq)-dimensional linear variety, which can be considered as the direct sum of the feedbacks of the restriction to S and the ... -
On the effect of friend feedbacks
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2011)
Article
Accés restringit per política de l'editorialGiven S an (A,B)-invariant subspace, we prove that the set of friend feedbacks is a linear variety, which can be considered as the direct sum of the feedbacks of the restriction to S and the co-restriction to S ⊥. In ... -
Output regulation problem for differentiable families of linear systems
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2010)
Article
Accés obertGiven a family of linear systems depending on a parameter varying in a differentiable manifold, we obtain sufficient conditions for the existence of a (global or local) differentiable family of controllers solving the ... -
Output regulation problem for differentiable families of linear systems
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2009)
Article
Accés obertGiven a family of linear systems depending on a parameter varying in a differentiable manifold, we obtain sufficient conditions for the existence of a (global or local) differentiable family of controllers solving the ... -
Perturbations preserving conditioned invariant subspaces
Peña Carrera, Marta; Compta Creus, Albert; Ferrer Llop, Josep (2010)
Comunicació de congrés
Accés obertGiven the set of matrix pairs M ⊂ Mm,n(C) × Mn(C) keeping a subspace S ⊂ Cn invariant, we obtain a miniversal deformation of a pair belonging to an open dense subset of M. It generalizes the known results when S is a ... -
Perturbations preserving conditioned invariant subspaces
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (2011)
Article
Accés restringit per política de l'editorialGiven the set of matrix pairsM Mm,n.C/ Mn.C/ keeping a subspace S Cn invariant, we obtain a miniversal deformation of a pair belonging to an open dense subset ofM. It generalizes the known results when S is a ... -
Perturbed marked reduced forms of invariant subspaces
Compta Creus, Albert; Ferrer Llop, Josep; Peña Carrera, Marta (Elsevier, 2018-12-15)
Article
Accés obertThe classification of invariant subspaces is an open problem related to other important ones like the Carlson problem. Here we obtain a reduced form of these invariant subspaces as a new tool to tackle these problems. In ...