摘要
研究了Hilbert空间H(?)K上的2×2阶上三角算子矩阵Mc=(AO CB)当A,B 给定,C为任意有界线性算子时,对Mc的点谱、剩余谱、连续谱的扰动分别给出了描述.
In this paper, we study the 2 × 2 upper triangular operator matrices such as Mc = (A C 0 B) on the Hilbert space H ⊕ K. Given A and B, the perturbation's discriptions for point spectrum, residual spectrum and continuous spectrum of Mc are presented, respectively, where C is an arbitrary bounded linear operator.
出处
《系统科学与数学》
CSCD
北大核心
2006年第3期257-263,共7页
Journal of Systems Science and Mathematical Sciences
基金
国家自然科学基金(10162003
10562002)内蒙古自然科学基金(200508010103)内蒙古自治区高等教育"111工程"基金内蒙古大学青年基金(ND0407)资助课题.
关键词
算子矩阵
点谱
剩余谱
连续谱
谱扰动.
Operator matrices, point spectrum, residual spectrum, continuous spectrum, perturbation of spectrums.