Title of article
On the geometry of numerical ranges in spaces with an indefinite inner product Original Research Article
Author/Authors
N. Bebiano، نويسنده , , R. Lemos، نويسنده , , J. da Providência، نويسنده , , G. Soares، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
18
From page
17
To page
34
Abstract
Geometric properties of the numerical ranges of operators on an indefinite inner product space are investigated. In particular, classes of matrices are presented such that the boundary generating curves of the J-numerical range are hyperbolical. The curvature of the J-numerical range at a boundary point is studied, generalizing results of Fiedler on the classical numerical range.
Keywords
numerical range , Generalized Levinger curve , Indefinite inner product
Journal title
Linear Algebra and its Applications
Serial Year
2005
Journal title
Linear Algebra and its Applications
Record number
824743
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