摘要
讨论了上三角算子矩阵S_C:=(AC OB):■左(右)谱的有限秩和紧扰动,还讨论了缺项算子矩阵M_X(AC XB):■在C是紧算子的条件下左(右)谱的扰动.
The finite and compact perturbations of left (right) spectrum of 2 × 2 upper triangular operator matrix Sv are studied, where Sv :=(AC 0B)is an operator acting on the Hilbert space H+K. LetMx := (AC XB)be a 2 × 2 operator matrix acting on the Hilbert space H+K E. For given A, B and C, the perturbation of left (right) spectrum of operator matrix Mx is considered under the condition in which C is a compact operator.
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2007年第6期117-121,共5页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金(10571113)
陕西师范大学青年基金.
关键词
谱
左谱
算子矩阵
spectrum
left spectrum
operator matrix