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On the \(C\)-numerical range of a matrix - MaRDI portal

On the \(C\)-numerical range of a matrix (Q1344050)

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scientific article; zbMATH DE number 720467
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On the \(C\)-numerical range of a matrix
scientific article; zbMATH DE number 720467

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    On the \(C\)-numerical range of a matrix (English)
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    22 June 1995
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    The author gives a condition for the \(C\)-numerical range \(W(C,T)\) of \(T\) being a line segment. He also obtains the result that if the \(C\)- numerical range \(W(C,T)\) of \(T\) is nowhere dense in \(\mathbb{R}^ 2\) then the matrices \(C\) and \(T\) are normal matrices.
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    \(C\)-numerical range
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    normal matrices
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