On the spectra of non-selfadjoint differential operators and their adjoints in direct sum spaces.
El-Sayed Ibrahim, Sobhy (2003)
International Journal of Mathematics and Mathematical Sciences
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Displaying similar documents to “The spectra of general differential operators in the direct sum spaces”
On the spectra of non-selfadjoint differential operators and their adjoints in direct sum spaces.
Common spectral properties of linear operators and such that and .
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Feng, W. (1997)
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Spectral analysis for rank one perturbations of diagonal operators in non-archimedean Hilbert space
Toka Diagana, George D. McNeal (2009)
Commentationes Mathematicae Universitatis Carolinae
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The paper is concerned with the spectral analysis for the class of linear operators in non-archimedean Hilbert space, where is a diagonal operator and is a rank one operator. The results of this paper turn out to be a generalization of those results obtained by Diarra.
On the localization of the spectrum for quasi-selfadjoint extensions of a Carleman operator
S. M. Bahri (2012)
Mathematica Bohemica
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In the present work, using a formula describing all scalar spectral functions of a Carleman operator of defect indices in the Hilbert space that we obtained in a previous paper, we derive certain results concerning the localization of the spectrum of quasi-selfadjoint extensions of the operator .