On angular localization of spectra of perturbed operators
DOI:
https://doi.org/10.17398/2605-5686.35.2.197Palabras clave:
Operators, spectrum, angular location, perturbations, integral operatorResumen
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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Referencias
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