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Proceedings of the American Mathematical Society

Published by the American Mathematical Society, the Proceedings of the American Mathematical Society (PROC) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Equality of essential spectra of certain quasisimilar seminormal operators
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by L. R. Williams PDF
Proc. Amer. Math. Soc. 78 (1980), 203-209 Request permission

Abstract:

Let A and B be quasisimilar seminormal operators on a separable, infinite dimensional complex Hilbert space. Several conditions which imply that A and B have equal essential spectra are presented. For example, if A and B are both biquasitriangular then A and B have equal essential spectra.
References
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Additional Information
  • © Copyright 1980 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 78 (1980), 203-209
  • MSC: Primary 47B20; Secondary 47A10, 47A65
  • DOI: https://doi.org/10.1090/S0002-9939-1980-0550494-3
  • MathSciNet review: 550494