Search Results - "Ran, André C.M"
-
1
Eigenvalue perturbation theory of structured real matrices and their sign characteristics under generic structured rank-one perturbations
Published in Linear & multilinear algebra (03-03-2016)“…An eigenvalue perturbation theory under rank-one perturbations is developed for classes of real matrices that are symmetric with respect to a non-degenerate…”
Get full text
Journal Article -
2
Perturbation analysis of Lagrangian invariant subspaces of symplectic matrices
Published in Linear & multilinear algebra (01-03-2009)“…Lagrangian invariant subspaces for symplectic matrices play an important role in the numerical solution of discrete time, robust and optimal control problems…”
Get full text
Journal Article -
3
A nonlinear matrix equation connected to interpolation theory
Published in Linear algebra and its applications (01-03-2004)“…In this paper we study the matrix equation X=Q+A ∗( X ̂ −C) −1A, where Q is an n× n positive definite matrix, C is an mn× mn positive semidefinite matrix, A is…”
Get full text
Journal Article Conference Proceeding -
4
Synchronization of power systems under stochastic disturbances
Published in Automatica (Oxford) (01-05-2023)“…The synchronization of power generators is an important condition for the proper functioning of a power system, in which the fluctuations in frequency and the…”
Get full text
Journal Article -
5
A fixed point theorem in partially ordered sets and some applications to matrix equations
Published in Proceedings of the American Mathematical Society (01-05-2004)“…An analogue of Banach's fixed point theorem in partially ordered sets is proved in this paper, and several applications to linear and nonlinear matrix…”
Get full text
Journal Article -
6
Eigenvalue perturbation theory of classes of structured matrices under generic structured rank one perturbations
Published in Linear algebra and its applications (01-08-2011)“…udy the perturbation theory of structured matrices under structured rank one perturbations, and then focus on several classes of complex matrices. Generic…”
Get full text
Journal Article -
7
Global Properties of Eigenvalues of Parametric Rank One Perturbations for Unstructured and Structured Matrices II
Published in Complex analysis and operator theory (01-09-2022)“…We present in this note a correction to Theorem 17 in Ran and Wojtylak (Compl. Anal. Oper. Theory 15:44, 2021) and sharpen the estimates for eigenvalues of…”
Get full text
Journal Article -
8
Eigenvalues of rank one perturbations of unstructured matrices
Published in Linear algebra and its applications (15-07-2012)“…Let A be a fixed complex matrix and let u,v be two vectors. The eigenvalues of matrices A+τuv⊤(τ∈R) form a system of intersecting curves. The dependence of the…”
Get full text
Journal Article -
9
Global Properties of Eigenvalues of Parametric Rank One Perturbations for Unstructured and Structured Matrices
Published in Complex analysis and operator theory (01-04-2021)“…General properties of eigenvalues of A + τ u v ∗ as functions of τ ∈ C or τ ∈ R or τ = e i θ on the unit circle are considered. In particular, the problem of…”
Get full text
Journal Article -
10
Perturbation theory of selfadjoint matrices and sign characteristics under generic structured rank one perturbations
Published in Linear algebra and its applications (15-05-2012)“…For selfadjoint matrices in an indefinite inner product, possible canonical forms are identified that arise when the matrix is subjected to a selfadjoint…”
Get full text
Journal Article -
11
Eigenvalue perturbation theory of symplectic, orthogonal, and unitary matrices under generic structured rank one perturbations
Published in BIT Numerical Mathematics (01-03-2014)“…We study the perturbation theory of structured matrices under structured rank one perturbations, with emphasis on matrices that are unitary, orthogonal, or…”
Get full text
Journal Article -
12
Equivalence after extension and matricial coupling coincide with Schur coupling, on separable Hilbert spaces
Published in Linear algebra and its applications (01-08-2013)“…It is known that two Banach space operators that are Schur coupled are also equivalent after extension, or equivalently, matricially coupled. The converse…”
Get full text
Journal Article -
13
On the nonlinear matrix equation [formula omitted]: solutions and perturbation theory
Published in Linear algebra and its applications (01-05-2002)“…In this paper, the nonlinear matrix equation X+A ∗ F(X)A=Q is discussed. Sufficient conditions for the existence and uniqueness of a positive semidefinite…”
Get full text
Journal Article -
14
Construction and minimality of coordinated linear systems
Published in Linear algebra and its applications (01-07-2014)“…Coordinated linear systems are a particular class of hierarchical systems with a top-to-bottom information structure, consisting of a coordinator system and…”
Get full text
Journal Article -
15
LQ Control for Coordinated Linear Systems
Published in IEEE transactions on automatic control (01-04-2014)“…Coordinated linear systems are a special class of hierarchical linear systems, with a strict top-to-bottom information structure. The LQ problem over all…”
Get full text
Journal Article -
16
Control of Distributed Systems: Tutorial and Overview
Published in European journal of control (2011)“…Distributed systems consist of an interconnection of two or more subsystems. Control of such systems is structured by two or more controllers, each receiving…”
Get full text
Journal Article Conference Proceeding -
17
Distributed state estimation with communication of observations
Published in Linear algebra and its applications (01-08-2013)“…The paper discusses communication of state information in a distributed system. In particular, the following problem is considered: if a linear combination of…”
Get full text
Journal Article -
18
On the nonlinear matrix equation X+A∗F(X)A=Q: solutions and perturbation theory
Published in Linear algebra and its applications (01-05-2002)Get full text
Journal Article -
19
Controllability and observability of coordinated linear systems
Published in Linear algebra and its applications (01-07-2012)“…This paper develops concepts of controllability and observability for the class of coordinated linear systems, a special class of linear hierarchical systems…”
Get full text
Journal Article -
20
Asymptotics of the Smallest Singular Value of a Class of Toeplitz-generated Matrices II
Published in Integral equations and operator theory (01-06-2014)“…Square matrices of the form X n = T n + f n ( T n - 1 ) ∗ , where T n is a n × n invertible banded Toeplitz matrix and f n some positive sequence are…”
Get full text
Journal Article