Spectral continuity for operator matrices

被引：0
|
作者：
Djordjevic, SV
Han, YM
机构：
[1] Univ Nish, Fac Philosophy, Dept Math, YU-18000 Nish, Yugoslavia
[2] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea
来源：
GLASGOW MATHEMATICAL JOURNAL | 2001年 / 43卷
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D O I：
暂无
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
In this paper we prove that if M-C = ((A)(0) (C)(B)) is a 2 x 2 upper tri- angular operator matrix on the Hilbert space H circle plus K and if sigma(A) boolean AND sigma(B) = 0, then sigma is continuous at A and B if and only if sigma is continuous at M-C, for every C is an element of B(K, H).
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页码：487 / 490
页数：4
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