TOTAL DECOMPOSITION AND BLOCK NUMERICAL RANGE

被引：4

作者：

Salemi, Abbas ^{[1
,2
]}

机构：

[1] Shahid Bahonar Univ Kerman, Dept Math, Kerman, Iran

[2] SBUK Ctr Excellence Linear Algebra & Optimizat, Kerman, Iran

来源：

BANACH JOURNAL OF MATHEMATICAL ANALYSIS | 2011年 / 5卷 / 01期

关键词：

Block numerical range; total decomposition; spectrum;

D O I：

10.15352/bjma/1313362979

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

Let H be a separable Hilbert space and let A is an element of B(H). In this note the notion of a total decomposition is introduced, and it is shown that sometimes the block numerical ranges corresponding to a total decomposition approximate sigma(A), sometimes not.

引用

页码：51 / 55

页数：5