Perturbation of Browder spectrum of upper triangular operator matrices
Perturbation of Browder spectrum of upper triangular operator matrices
复制标题
上三角算子矩阵的Browder谱的摄动
DOI:
10.1080/03081087.2015.1050349
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发表时间:
2013-12
影响因子:
1.1
通讯作者:
Zhong, Huaijie
中科院分区:
文献类型:
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作者:
Zhang, Shifang;Zhang, Lin;Zhong, Huaijie
Let be a 2-by-2 upper triangular operator matrix acting on the Banach space or Hilbert space . For the most important spectra such as spectrum, essential spectrum and Weyl spectrum, the characterizations of the perturbations of on Banach space have been presented. However, the characterization for the Browder spectrum on the Banach space is still unknown. The goal of this paper is to present some necessary and sufficient conditions for to be Browder for some using an alternative approach based on matrix representation of operators and the ghost index theorem. Moreover, in the Hilbert space case, the characterizations of the Fredholm and invertible perturbations of Browder spectrum are also given.
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影响因子:
1.3
作者:
Shifang Zhang;Zhaoqi Wu
通讯作者:
Shifang Zhang;Zhaoqi Wu
影响因子:
1.1
作者:
Shifang Zhang;H. Zhong;Qiaofen Jiang
通讯作者:
Shifang Zhang;H. Zhong;Qiaofen Jiang
DOI:
10.1090/s0002-9939-1994-1185266-2
发表时间:
1994-03
期刊:
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影响因子:
--
作者:
H. Du;Pan Jin
通讯作者:
H. Du;Pan Jin
影响因子:
1.1
作者:
S. Djordjević;B. Duggal
通讯作者:
S. Djordjević;B. Duggal
影响因子:
1.3
作者:
通讯作者:
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