Xia Spectrum for Some Class of Operators
. In this paper, we introduce Xia spectra of n -tuples of operators satisfying | T 2 | ≥ U | T 2 | U * for the polar decomposition of T = U | T | and we extend Putnam’s inequality to these tuples [7].
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Published in | Integral equations and operator theory Vol. 61; no. 2; pp. 159 - 165 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Basel
SP Birkhäuser Verlag Basel
01.06.2008
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Subjects | |
Online Access | Get full text |
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Summary: | .
In this paper, we introduce Xia spectra of
n
-tuples of operators satisfying |
T
2
| ≥
U
|
T
2
|
U
* for the polar decomposition of
T
=
U
|
T
| and we extend Putnam’s inequality to these tuples [7]. |
---|---|
ISSN: | 0378-620X 1420-8989 |
DOI: | 10.1007/s00020-008-1584-7 |