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Mostrando ítems 1-3 de 3

Fixed rank perturbations of regular matrix pencils

BARAGAÑA GARATE, ITZIAR; Roca Martinez, Alicia (Elsevier, 2020-03-15)

[EN] A characterization of the structure of a regular matrix pencil obtained by a bounded rank perturbation of another regular matrix pencil has been recently obtained. The result generalizes the solution for the bounded ...
The change of the Weierstrass structure under one row perturbation

Baragaña. Itziar; Roca Martinez, Alicia (John Wiley & Sons, 2021-11)

[EN] In this work we study the change of the structure of a regular pencil when we perform small perturbations over some of its rows and the other rows remain unaltered. We provide necessary conditions when several rows ...
Weierstrass Structure and Eigenvalue Placement of Regular Matrix Pencils under Low Rank Perturbations

Baragana Garate, Itziar; Roca Martinez, Alicia (Society for Industrial and Applied Mathematics, 2019)

[EN] 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 to find necessary and sufficient ...

Mostrando ítems 1-3 de 3