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Perturbation of the Defect Spectrum of 3×3 Upper Triangular Operator Matrices
Pages: 7-11
Year: Issue:  1
Journal: Journal of Inner Mongolia University(Natural Science Edition)

Keyword:  算子矩阵 亏谱 近似点谱;
Abstract: 设H1,H2和H3为无穷维可分的Hilbert空间,对于给定的A∈B(H1),B∈B(H2)和C∈B(H3),定义3阶上三角缺项算子矩阵M(X,Y,Z)=(A X Y0 B Z0 0 C.).给出缺项算子矩阵M(的亏谱和近似点谱的扰动结果.
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