Demicompact linear operator. Essential pseudospectra and perturbation.
In: Georgian Mathematical Journal, 2024-06-26, S. 1-9
academicJournal
Zugriff:
In this paper, we give new results on demicompact linear operators, study some properties and some results on Fredholm and upper semi-Fredholm relations involving demicompact operators. Our results are used to provide a fine description of the essential pseudospectra. [ABSTRACT FROM AUTHOR]
Titel: |
Demicompact linear operator. Essential pseudospectra and perturbation.
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Autor/in / Beteiligte Person: | Ammar, Aymen ; Daoud, Houcem ; Jeribi, Aref |
Zeitschrift: | Georgian Mathematical Journal, 2024-06-26, S. 1-9 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1072-947X (print) |
DOI: | 10.1515/gmj-2024-2032 |
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