期刊论文详细信息
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS 卷:342
Norm inequalities for sums of two basic elementary operators
Article
Boumazgour, Mohamed
关键词: norm;    elementary operators;    numerical ranges;    C*-algebras;   
DOI  :  10.1016/j.jmaa.2007.12.001
来源: Elsevier
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【 摘 要 】

We use certain norm inequalities for 2 x 2 operator matrices to establish norm inequalities for sums of two basic elementary operators on a Hilbert space. Further, we give necessary and sufficient conditions under which the norm of the above sum of elementary operators attains its optimal value. Applications of the inequalities obtained are also considered. (C) 2007 Elsevier Inc. All rights reserved.

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