Upper semi-Weyl and upper semi-Browder spectra of unbounded upper triangular operator matrices (Q1755701)
From MaRDI portal
 | This is the item page for this Wikibase entity, intended for internal use and editing purposes. Please use this page instead for the normal view: Upper semi-Weyl and upper semi-Browder spectra of unbounded upper triangular operator matrices |
scientific article; zbMATH DE number 7000104
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Upper semi-Weyl and upper semi-Browder spectra of unbounded upper triangular operator matrices |
scientific article; zbMATH DE number 7000104 |
Statements
Upper semi-Weyl and upper semi-Browder spectra of unbounded upper triangular operator matrices (English)
0 references
11 January 2019
0 references
Summary: In this paper, we study the unbounded upper triangular operator matrix with diagonal domain. Some sufficient and necessary conditions are given under which upper semi-Weyl spectrum (resp. upper semi-Browder spectrum) of such operator matrix is equal to the union of the upper semi-Weyl spectra (resp. the upper semi-Browder spectra) of its diagonal entries. As an application, the corresponding spectral properties of Hamiltonian operator matrix are obtained.
0 references
0.9610798
0 references
0.9523939
0 references
0.93290496
0 references
0.9319858
0 references
0.92935693
0 references
0.9271053
0 references
0.92579615
0 references
0.9236954
0 references
