有界线性算子的一个谱扰动问题

The Problem on the Perturbation of Bounded Linear Operators

对于A=(?)是H=H1(?)H2上的有界线性算子,通过引入σs(A)集合,并得到σs(A) 的结果.

Let be a bounded linear operator on the Hilbert space ,According to the relation between the numerical range and its spectrum of bounded linear operators on a Hilbert space, we introduce into ,and get an importance result concerning it in the following: ,in which be the bounded linear operator on the Hilbert space and.