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A note on classes of structured matrices with elliptical type numerical range

Natália Bebiano; Susana Furtado — 2021

Czechoslovak Mathematical Journal

We identify new classes of structured matrices whose numerical range is of the elliptical type, that is, an elliptical disk or the convex hull of elliptical disks.

On the characteristic polynomial of matrices with prescribed columns and the stabilization and observability of linear systems.

Furtado, Susana; Silva, Fernando C. — 1998

ELA. The Electronic Journal of Linear Algebra [electronic only]

Page 1

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