12 citations · 14 across the 8 of their papers we have counts for
4 papers · 1 filter
Weierstrass structure and eigenvalue placement of regular matrix pencils under low rank perturbations
Itziar Baragaña, Alicia Roca
We solve the problem of determining the Weierstrass structure of a regular matrix pencil obtained by a low rank perturbation of another regular matrix pencil. We apply the result t…
Row or column completion of polynomial matrices of given degree II
Agurtzane Amparan, Itziar Baragaña, Silvia Marcaida +1
The row (column) completion problem of polynomial matrices of given degree with prescribed eigenstructure has been studied in \cite{AmBaMaRo23}, where several results of prescripti…
Row or column completion of polynomial matrices of given degree
A. Amparan, I. Baragaña, S. Marcaida +1
We solve the problem of characterizing the existence of a polynomial matrix of fixed degree when its eigenstructure (or part of it) and some of its rows (columns) are prescribed. M…
On the change of the Weyr characteristics of matrix pencils after rank-one perturbations
Itziar Baragaña, Alicia Roca
The change of the Kronecker structure of a matrix pencil perturbed by another pencil of rank one has been characterized in terms of the homogeneous invariant factors and the chains…