3 x 3 matrices with a flat portion on the boundary of the numerical range (Q1774969)
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scientific article; zbMATH DE number 2165356
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | 3 x 3 matrices with a flat portion on the boundary of the numerical range |
scientific article; zbMATH DE number 2165356 |
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3 x 3 matrices with a flat portion on the boundary of the numerical range (English)
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4 May 2005
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The authors show that the set of unitary irreducible complex \(3\times 3\) matrices whose numerical range has a flat portion is connected and they present real analytic properties of this set. Other related results are also given.
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numerical ranges
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flat portion
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unitary irreducible complex \(3 \times 3\) matrices
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