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].

Saved in:
Bibliographic Details
Published inIntegral equations and operator theory Vol. 61; no. 2; pp. 159 - 165
Main Authors Chō, Muneo, Huruya, Tadasi, Tanahashi, Kôtarô
Format Journal Article
LanguageEnglish
Published Basel SP Birkhäuser Verlag Basel 01.06.2008
Subjects
Analysis
Mathematics
Mathematics and Statistics
Secondary 47A10
Xia spectrum
Primary 47B20
Taylor spectrum
Hilbert space
Putnam’s inequality
joint approximate point spectrum
operator
Online AccessGet full text

Cover

More Information
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