Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4621880 | Journal of Mathematical Analysis and Applications | 2008 | 7 Pages |
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.
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