Open AccessMETHODS OF PERTURBATION THEORY IN THE QUALITATIVE ESSENTIAL SPECTRAL ANALYSIS OF DIFFERENTIAL OPERATORS
Author(s) -
В. А. Еровенко
Publication year - 1998
Publication title -
mathematical modelling and analysis/mathematical modeling and analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.491
H-Index - 25
eISSN - 1648-3510
pISSN - 1392-6292
DOI - 10.3846/13926292.1998.9637090
Subject(s) - mathematics , mathematical analysis , pure mathematics
The qualitative properties of perturbed differential equations are investigated. The analogies of the classical Weyl theorem are proved.