Article ID Journal Published Year Pages File Type
4621880 Journal of Mathematical Analysis and Applications 2008 7 Pages PDF
Abstract

For A∈B(X), B∈B(Y) and C∈B(Y,X), let MC be the operator defined on X⊕Y by . In this paper, we study defect set (Σ(A)∪Σ(B))∖Σ(MC), where Σ is the Browder spectrum, the essential approximate point spectrum and Browder essential approximate point spectrum. We then give application for Weyl's and Browder's theorems.

Related Topics
Physical Sciences and Engineering Mathematics Analysis