ArticleOriginal scientific text
Title
Perturbation of the spectrum οf an essentially selfadjoint operator
Authors 1
Affiliations
- Institute of Mathematics, Polish Academy of Sciences, Śniadeckich 8, 00-950 Warszawa, Poland
Abstract
The aim of this paper is to find estimates of the Hausdorff distance between the spectra of two nonselfadjoint operators. The operators considered are assumed to have their imaginary parts in some normed ideal of compact operators. In the case of the classical Schatten ideals the estimates are given explicitly.
Keywords
crossnorm, spectrum
Bibliography
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Pages:
75-89
Main language of publication
English
Received
1992-11-18
Accepted
1993-06-24
Published
1993
Exact and natural sciences