A hyponormal operator whose spectrum is not a spectral set
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- by Bhushan L. Wadhwa PDF
- Proc. Amer. Math. Soc. 38 (1973), 83-85 Request permission
Abstract:
Clancey has given an example of a hyponormal, nonnormal operator whose spectrum is thin and hence not a spectral set. In this note, using fairly simple techniques, we give an example of a hyponormal operator whose spectrum contains a disc and is not a spectral set.References
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Additional Information
- © Copyright 1973 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 38 (1973), 83-85
- DOI: https://doi.org/10.1090/S0002-9939-1973-0310690-3
- MathSciNet review: 0310690