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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


An extension of the Weyl-von Neumann theorem to normal operators

Author: I. David Berg
Journal: Trans. Amer. Math. Soc. 160 (1971), 365-371
MSC: Primary 47.40
MathSciNet review: 0283610
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Abstract: We prove that a normal operator on a separable Hilbert space can be written as a diagonal operator plus a compact operator. If, in addition, the spectrum lies in a rectifiable curve we show that the compact operator can be made Hilbert-Schmidt.

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PII: S 0002-9947(1971)0283610-0
Keywords: Normal operator, diagonal operator, Hilbert-Schmidt, compact
Article copyright: © Copyright 1971 American Mathematical Society