A note on Weyl spectra of upper-triangular operator matrices
Abstract
Let M_C be a 2 x 2 upper triangular operator matrix acting on the Hilbert space H + K. In this paper, for given operators A and B, we give a new characterization of ∩_{C∈B(K,H) σ_w(M_C), whereσ_w(A) denote the Weyl spectrum of A.
Copyright © 2015 Haiyan Zhang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Cite this article
H. Zhang, A note on Weyl spectra of upper-triangular operator matrices, J. Math. Comput. Sci. 5 (2015), 273–279.
BibTeX
@article{Zhang2015,
author = {Zhang, Haiyan},
title = {A note on Weyl spectra of upper-triangular operator matrices},
journal = {J. Math. Comput. Sci.},
volume = {5},
year = {2015},
pages = {273--279},
doi = {}
}