Abstract
Various characterizations are given of real and complex Hilbert space operators with the numerical range in a given closed half plane.
Citation
Wai-Shun Cheung. Chi-Kwong Li. Leiba Rodman. "OPERATORS WITH NUMERICAL RANGE IN A GIVEN CLOSED HALF PLANE." Taiwanese J. Math. 11 (2) 471 - 481, 2007. https://doi.org/10.11650/twjm/1500404702
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