Keyword page

essential spectrums

11 articles

Showing 1-11 of 11

Article Title Journal Published
OaM-17-70 The essential spectrum equalities of 2×2 unbounded upper triangular operator matrices
XinRan Liu, Deyu Wu
OaM
Operators and Matrices
 Volume 17, Issue 4
12/2023
DEA-15-16 𝒞-symmetric second order differential operators with large leading coefficient
Horst Behncke, Don B. Hinton
DEA
Differential Equations & Applications
 Volume 15, Issue 4
11/2023
OaM-17-43 Spectral representation of absolutely minimum attaining unbounded normal operators
S. H. Kulkarni, G. Ramesh
OaM
Operators and Matrices
 Volume 17, Issue 3
09/2023
OaM-16-12 On a characterization of Jeribi, Rakočević, Schechter, Schmoeger and Wolf essential spectra of a 3⨉3 block operator matrices with non diagonal domain and application
Nedra Moalla, Wafa Selmi
OaM
Operators and Matrices
 Volume 16, Issue 1
03/2022
OaM-14-54 𝒞-symmetric second order differential operators
Horst Behncke, Don B. Hinton
OaM
Operators and Matrices
 Volume 14, Issue 4
12/2020
OaM-13-16 On the essential spectra of unbounded operator matrices with non diagonal domain and an application
Marwa Belghith, Nedra Moalla, Ines Walha
OaM
Operators and Matrices
 Volume 13, Issue 1
03/2019
OaM-10-29 Variational principles for self-adjoint operator functions arising from second-order systems
Birgit Jacob, Matthias Langer, Carsten Trunk
OaM
Operators and Matrices
 Volume 10, Issue 3
09/2016
OaM-08-11 Essential spectra of some matrix operators by means of measures of weak noncompactness
Boulbeba Abdelmoumen
OaM
Operators and Matrices
 Volume 8, Issue 1
03/2014
OaM-07-52 Essential spectra of quasi-parabolic composition operators on Hardy spaces of the Poly-disc
Uğur Gül
OaM
Operators and Matrices
 Volume 7, Issue 4
12/2013
OaM-06-37 Elementary models of unbounded Jacobi matrices with a few bounded gaps in the essential spectrum
Anne Boutet de Monvel, Jan Janas, Serguei Naboko
OaM
Operators and Matrices
 Volume 6, Issue 3
09/2012
OaM-01-03 Location of the spectrum of operator matrices which are associated to second order equations
Birgit Jacob, Carsten Trunk
OaM
Operators and Matrices
 Volume 1, Issue 1
03/2007