2×2上三角算子矩阵的左(右)Weyl谱的交  

The Intersection of Left (Right) Weyl Spectrum of 2×2 Upper Triangular Operator Matrices

作　　者：李愿[1] 孙秀红[2] 杜鸿科[1] 

机构地区：[1]陕西师范大学数学与信息科学学院,西安710062 [2]西安科技大学基础部数学教研室,西安710055

出　　处：《数学学报（中文版）》2005年第4期653-660,共8页Acta Mathematica Sinica：Chinese Series

基　　金：国家自然科学基金资助项目(19971056)

摘　　要：本文刻画了上三角算子矩阵M_C=(A0CB)■→■左(右)Weyl谱的交.Let bea2×2 upper triangular operator matrix acting on the Hilbert space. For given A and B, the sets and has been characterized completely, where σlw(T) and σrw(T) denote the left Weyl and the right Weyl spectra of an operator T, respectively.

关 键 词：FREDHOLM算子 WEYL谱 上三角算子矩阵 

分 类 号：O177.1[理学—数学]