Article ID Journal Published Year Pages File Type
9498267 Linear Algebra and its Applications 2005 22 Pages PDF
Abstract
A result of Au-Yeung and Poon on 3 × 3 orthostochastic matrices is extended to analogous operators arising in the context of indefinite inner product spaces. This result is used to study the numerical range of certain operators on a three-dimensional Krein space. In particular, the convexity and the boundary of the set are investigated.
Keywords
Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory
Preview
J-orthostochastic matrices of size 3 × 3 and numerical ranges of Krein space operators
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