一类缺项算子矩阵的四类点谱的扰动

张澜;阿拉坦仓

系统科学与数学 ›› 2010, Vol. 30 ›› Issue (5) : 681-688.

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系统科学与数学 ›› 2010, Vol. 30 ›› Issue (5) : 681-688. DOI: 10.12341/jssms08984
论文

一类缺项算子矩阵的四类点谱的扰动

    张澜(1), 阿拉坦仓(2)
作者信息 +

Perturbation of Four Kinds of Point Spectrums of a Class of Upper Triangular Operator Matrices

    ZHANG Lan(1), Alatancang(2)
Author information +
文章历史 +

摘要

有界线性算子的点谱可进一步细分为4类,分别为σp1, σp2, σp3σp4.设 H,K为无穷维可分的Hilbert空间,用MC表示2×2上三角算子矩阵(AC0B),对于给定的 AB(H), BB(K),
描述了集合CB(K,H)σp1(MC), CB(K,H)σp2(MC), CB(K,H)σp3(MC)CB(K,H)σp4(MC).

Abstract

The point spectrum is divided into four kinds σp1, σp2, σp3 and σp4. In this paper, let H and K be two separable Hilbert spaces. Donote by MC the 2×2 upper triangular operator matrix acting on HK of the form (AC0B).
For given operators AB(H) and BB(K), the sets CB(K,H)σp1(MC), CB(K,H)σp2(MC), CB(K,H)σp3(MC) and CB(K,H)σp4(MC) are characterized.

关键词

缺项算子 / / 点谱 / 谱扰动.

Key words

Operator partial matrices / spectrum / point spectrum / perturbation of spectrum.

引用本文

导出引用
张澜 , 阿拉坦仓. 一类缺项算子矩阵的四类点谱的扰动. 系统科学与数学, 2010, 30(5): 681-688. https://doi.org/10.12341/jssms08984
ZHANG Lan , Alatancang. Perturbation of Four Kinds of Point Spectrums of a Class of Upper Triangular Operator Matrices. Journal of Systems Science and Mathematical Sciences, 2010, 30(5): 681-688 https://doi.org/10.12341/jssms08984
中图分类号: 47A55    47A10   
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