Spectral enclosures for a class of block operator matrices
Tools
Giribet, Juan and Langer, Matthias and Martínez Pería, Francisco and Philipp, Friedrich and Trunk, Carsten (2020) Spectral enclosures for a class of block operator matrices. Journal of Functional Analysis, 278 (10). 108455. ISSN 0022-1236 (https://doi.org/10.1016/j.jfa.2019.108455)
Preview |
Text.
Filename: Giribet_etal_JFA_2020_Spectral_enclosures_for_a_class_of_block_operator_matrices.pdf
Accepted Author Manuscript License: Download (708kB)| Preview |
Abstract
We prove new spectral enclosures for the non-real spectrum of a class of 2×2 block operator matrices with self-adjoint operators A and D on the diagonal and operators B and -B* as off-diagonal entries. One of our main results resembles Gershgorin's circle theorem. The enclosures are applied to J-frame operators.
ORCID iDs
Giribet, Juan, Langer, Matthias ORCID: https://orcid.org/0000-0001-8813-7914, Martínez Pería, Francisco, Philipp, Friedrich and Trunk, Carsten;-
-
Item type: Article ID code: 71075 Dates: DateEvent1 June 2020Published2 January 2020Published Online9 December 2019AcceptedSubjects: Science > Mathematics Department: Faculty of Science > Mathematics and Statistics Depositing user: Pure Administrator Date deposited: 10 Jan 2020 16:49 Last modified: 11 Nov 2024 12:33 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/71075
CORE (COnnecting REpositories)