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W-hyponormal operators have scalar extensions

Title
W-hyponormal operators have scalar extensions
Authors
Ko E.
Ewha Authors
고응일
SCOPUS Author ID
고응일scopus
Issue Date
2005
Journal Title
Integral Equations and Operator Theory
ISSN
0378-620XJCR Link
Citation
Integral Equations and Operator Theory vol. 53, no. 3, pp. 363 - 372
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
In this paper we show that every w-hyponormal operator has a scalar extension, i.e. is similar to the restriction to an invariant subspace of a scalar operator of order 4. As a corollary, we obtain that every w-hyponormal operator satisfies the property (β). © 2005 Birkhäuser Verlag, Basel/Switzerland.
DOI
10.1007/s00020-003-1323-z
Appears in Collections:
자연과학대학 > 수학전공 > Journal papers
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