On angular localization of spectra of perturbed operators

• M. I. Gil ^[1]
  1. [1] Ben-Gurion University of the Negev

     Ben-Gurion University of the Negev

     Israel

     
• Localización: Extracta mathematicae, ISSN-e 0213-8743, Vol. 35, Nº 2, 2020, págs. 197-204
• Idioma: inglés
• DOI: 10.17398/2605-5686.35.2.197
• Enlaces
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• Resumen

  • Let A and à be bounded operators in a Hilbert space. We consider the following problem: let the spectrum of A lie in some angular sector. In what sector the spectrum of à lies if A and à are “close”? Applications of the obtained results to integral operators are also discussed.

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