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On the variation detracting property of a class of operators

✍ Scribed by Octavian Agratini


Book ID
108052245
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
137 KB
Volume
19
Category
Article
ISSN
0893-9659

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## Abstract The aim of this note is to study the spectral properties of the LUECKE's class __R__ of operators __T__ such that β€–(__T – zI__)^βˆ’1^β€–=1/__d__(__z, W__(__T__)) for all __z__βˆ‰__CLW__(__T__), where __CLW__(__T__) is the closure of the numerical range __W__(__T__) of __T__ and __d__(__z, W__