On operators with the same spectrum
Gh. Constantin (1975)
Matematički Vesnik
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Displaying similar documents to “On a class of operators”
On operators with the same spectrum
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2010 Mathematics Subject Classification: 47A10. We show that the symmetric difference between the generalized Kato spectrum and the essential spectrum defined in [7] by sec(T) = {l О C ; R(lI-T) is not closed } is at most countable and we also give some relationship between this spectrum and the SVEP theory.
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