Flat portions on the boundary of the indefinite numerical range of 3×3 matrices

Teixeira, Ricardo Emanuel Cunha; Bebiano, Natália; Providência, João da

http://hdl.handle.net/10400.3/1457

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Authors

Teixeira, Ricardo Emanuel Cunha

Bebiano, Natália

Providência, João da

Abstract(s)

We focus on complex 3×3 matrices whose indefinite numerical ranges have a flat portion on the boundary. The results here obtained are parallel to those of Keeler, Rodman and Spitkovsky for the classical numerical range.

Description

Keywords

Indefinite Numerical Range Indefinite Inner Product Space Plane Algebraic Curve Flat Portion

URI

http://hdl.handle.net/10400.3/1457

Citation

Teixeira, Ricardo; Bebiano, Natália; Providência, João da (2008). «Flat portions on the boundary of the indefinite numerical range of 3×3 matrices». "Linear Algebra and its Applications", 428, nº 11-12, 2863-2879.

Publisher

Elsevier

Collections

DME - Artigos em Revistas Internacionais / Articles in International Journals

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