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代数κ-拟-A类算子的Weyl定理    

Weyl's Theorem for Algebraically κ-Quasi-Class A Operators

文献类型:期刊文献

中文题名:代数κ-拟-A类算子的Weyl定理

英文题名:Weyl's Theorem for Algebraically κ-Quasi-Class A Operators

作者:左飞[1];申俊丽[2]

第一作者:左飞

机构:[1]河南师范大学数学与信息科学学院;[2]新乡学院数学系

第一机构:河南师范大学数学与信息科学学院,河南新乡453007

年份:2011

卷号:32

期号:4

起止页码:459-466

中文期刊名:数学年刊:A辑

收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:教育部科技司(No208081)资助的项目

语种:中文

中文关键词:Weyl定理;Browder定理;代数κ-拟-A类算子;a-Weyl定理;a-Browder定理

外文关键词:Weyl's theorem; Browder's theorem; Algebraically κ-quasi-class A operator; α-Weyl's theorem; α-Browder's theorem

摘要:若T或T^*是无穷维可分的Hilbert空间H上的代数κ-拟-A类算子,则Weyl定理对任意的f∈H(σ(T))成立,其中H(σ(T))为σ(T)的开邻域上解析函数的全体.若T^*是代数κ-拟-A类算子,则a-Weyl定理对f(T)成立。还证明了若T或T^*是代数κ-拟-A类算子,则Weyl谱与本质近似点谱的谱映射定理对f(T)成立.
If T or T~* is an algebraically κ-quasi-class A operator acting on an infinitely dimensional separable Hilbert space H,then it is proved that the Weyl's theorem holds for every f∈H(σ(T)),where H(σ(T))denotes the set of all analytic functions on an open neighborhood ofσ(T).Moreover,if T~* is an algebraically κ-quasi-class A operator,then theα-Weyl's theorem holds for f(T).Also,if T or T^* is an algebraically κ-quasi-class A operator,then the spectral mapping theorems for both the Weyl's spectrum and the essential approximate point spectrum of T are established for every f(T).

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