Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/4584
Title: Flat portions on the boundary of the indefinite numerical range of 3×3 matrices
Authors: Bebiano, N. 
Providência, J. da 
Teixeira, R. 
Keywords: Indefinite numerical range; Indefinite inner product space; Plane algebraic curve; Flat portion
Issue Date: 2008
Citation: Linear Algebra and its Applications. 428:11-12 (2008) 2863-2879
Abstract: 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.
URI: http://hdl.handle.net/10316/4584
DOI: 10.1016/j.laa.2008.01.017
Rights: openAccess
Appears in Collections:FCTUC Matemática - Artigos em Revistas Internacionais

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