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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

 

The Weyl essential spectrum


Author: Richard Bouldin
Journal: Proc. Amer. Math. Soc. 28 (1971), 531-536
MSC: Primary 47.30
MathSciNet review: 0278093
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Abstract: Using a modest geometric hypothesis the main theorem of these results classifies the Weyl essential spectrum and the Browder essential spectrum according to the standard terminology for the spectrum of a Hilbert space operator.


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DOI: http://dx.doi.org/10.1090/S0002-9939-1971-0278093-6
PII: S 0002-9939(1971)0278093-6
Keywords: Essential spectrum, operator on a Hilbert space, eigenvalue, algebraic multiplicity, geometric multiplicity, Fredholm operator, index, closed range
Article copyright: © Copyright 1971 American Mathematical Society