2014 / September Volume 9 No.3
Excursions in Numerical Ranges
| Published Date |
2014 / September
|
|---|---|
| Title | Excursions in Numerical Ranges |
| Author | |
| Keyword | |
| Download | |
| Pagination | 351-370 |
| Abstract | We survey some of our recent results on three topics in the study of numerical ranges,
namely, (1) Anderson’s condition for the numerical range of a finite matrix to equal a
circular disc, (2) Holbrook’s conjecture on the numerical radius inequality concerning the
product of two commuting operators, and (3) Williams and Crimmins’s structure theorem
on an operator when its numerical radius equals half of its norm.
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| AMS Subject Classification |
15A60, 47A12
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| Received |
2014-07-10
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| Accepted |
2014-07-10
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