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Remarks on numerical ranges of operators in spaces with an indefinite metric |
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| Authors: | Chi-Kwong Li Leiba Rodman |
| Institution: | Department of Mathematics, The College of William and Mary, Williamsburg, Virginia 23187 ; Department of Mathematics, The College of William and Mary, Williamsburg, Virginia 23187 |
| Abstract: | The numerical range of an operator on an indefinite inner product space (possibly infinite dimensional) is studied. In particular, operators having bounded numerical ranges are characterized, and the angle points of the numerical range and their connections with eigenvalues are described. |
| Keywords: | Numerical range indefinite scalar product Krein space |
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