Abstract
Several new verifiable conditions are established for matrices of the form (Formula presented.) to have the numerical range equal the convex hull of at most k ellipses. For k = 2, these conditions are also necessary, provided that the ellipses are co-centred.
Original language | English (US) |
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Journal | Linear and Multilinear Algebra |
DOIs | |
State | Accepted/In press - 2020 |
Keywords
- Numerical range
ASJC Scopus subject areas
- Algebra and Number Theory