A characterization for the spectral capacity of a finite system of operators
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Ştefan Frunză (1977)
Czechoslovak Mathematical Journal
Pietro Aiena (1987)
Mathematische Zeitschrift
Teresa Álvarez, Aymen Ammar, Aref Jeribi (2014)
Colloquium Mathematicae
We characterize some S-essential spectra of a closed linear relation in terms of certain linear relations of semi-Fredholm type.
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