The Intersection of Upper and Lower Semi-Browder Spectrum of Upper-Triangular Operator Matrices

When A∈B(H) and B∈B(K) are given, we denote by MC the operator acting on the infinite-dimensional separable Hilbert space H⊕K of the form MC=(AC0B). In this paper, it is proved that there exists some operator C∈B(K,H) such that MC is upper semi-Browder if and only if there exists some left invertibl...

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Bibliographic Details
Main Authors: Shifang Zhang, Huaijie Zhong, Long Long
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2013/373147
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