Nonconvexity of the permanental numerical range (Q1210393)
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scientific article; zbMATH DE number 179135
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Nonconvexity of the permanental numerical range |
scientific article; zbMATH DE number 179135 |
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Nonconvexity of the permanental numerical range (English)
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8 August 1993
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The authors show that the Toeplitz-Hausdorff theorem for the numerical range fails to extend to the permanental numerical range and give a class of matrices for which the permanental numerical range is not convex.
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Toeplitz-Hausdorff theorem
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permanental numerical range
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0.8924924
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0.8714602
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0.86397284
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0.86178744
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0.8591188
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0.8534393
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