ON THE INSTABILITY OF THE ESSENTIAL SPECTRUM FOR BLOCK JACOBI MATRICES
Langue
en
Article de revue
Ce document a été publié dans
Constructive Approximation. 2018, vol. 48, n° 3, p. 473-500
Springer Verlag
Résumé en anglais
We are interested in the phenomenon of the essential spectrum instability for a class of unbounded (block) Jacobi matrices. We give a series of sufficient conditions for the matrices from certain classes to have a discrete ...Lire la suite >
Mots clés en anglais
unbounded (block) Jacobi matrices
instability of the essential spectrum
Levinson's asymptotic theory
Gilbert-Pearson subordinacy theory