Block Kronecker linearizations of matrix polynomials and their backward errors

FM Dopico, PW Lawrence, J Pérez, PV Dooren - Numerische Mathematik, 2018 - Springer
We introduce a new family of strong linearizations of matrix polynomials—which we call
“block Kronecker pencils”—and perform a backward stability analysis of complete …

Strong linearizations of rational matrices

A Amparan, FM Dopico, S Marcaida, I Zaballa - SIAM Journal on Matrix …, 2018 - SIAM
This paper defines for the first time strong linearizations of arbitrary rational matrices, studies
in depth properties and characterizations of such linear matrix pencils, and develops …

A framework for structured linearizations of matrix polynomials in various bases

L Robol, R Vandebril, PV Dooren - SIAM Journal on Matrix Analysis and …, 2017 - SIAM
We present a framework for the construction of linearizations for scalar and matrix
polynomials based on dual bases which, in the case of orthogonal polynomials, can be …

A simplified approach to Fiedler-like pencils via block minimal bases pencils

MI Bueno, FM Dopico, J Pérez, R Saavedra… - Linear Algebra and its …, 2018 - Elsevier
The standard way of solving the polynomial eigenvalue problem associated with a matrix
polynomial is to embed the matrix coefficients of the polynomial into a matrix pencil …

[HTML][HTML] On vector spaces of linearizations for matrix polynomials in orthogonal bases

H Faßbender, P Saltenberger - Linear Algebra and its Applications, 2017 - Elsevier
Regular and singular matrix polynomials P (λ)=∑ i= 0 k P i ϕ i (λ), P i∈ R n× n given in an
orthogonal basis ϕ 0 (λ), ϕ 1 (λ),…, ϕ k (λ) are considered. Following the ideas in [9], the …

Structured backward error analysis of linearized structured polynomial eigenvalue problems

F Dopico, J Pérez, P Van Dooren - Mathematics of Computation, 2019 - ams.org
We start by introducing a new class of structured matrix polynomials, namely, the class of
$\mathbf {M} _A $-structured matrix polynomials, to provide a common framework for many …

[HTML][HTML] Block Kronecker ansatz spaces for matrix polynomials

H Faßbender, P Saltenberger - Linear Algebra and its Applications, 2018 - Elsevier
In this paper, we introduce a new family of equations for matrix pencils that may be utilized
for the construction of strong linearizations for any square or rectangular matrix polynomial …

[HTML][HTML] Block minimal bases ℓ-ifications of matrix polynomials

FM Dopico, J Pérez, P Van Dooren - Linear Algebra and its Applications, 2019 - Elsevier
The standard way of solving a polynomial eigenvalue problem associated with a matrix
polynomial starts by embedding the matrix coefficients of the polynomial into a matrix pencil …

Compact two-sided Krylov methods for nonlinear eigenvalue problems

P Lietaert, K Meerbergen, F Tisseur - SIAM Journal on Scientific Computing, 2018 - SIAM
We describe a generalization of the compact rational Krylov (CORK) methods for polynomial
and rational eigenvalue problems that usually, but not necessarily, come from polynomial or …

[HTML][HTML] Robustness and perturbations of minimal bases

P Van Dooren, FM Dopico - Linear Algebra and its Applications, 2018 - Elsevier
Polynomial minimal bases of rational vector subspaces are a classical concept that plays an
important role in control theory, linear systems theory, and coding theory. It is a common …