A characterization for the spectral capacity of a finite system of operators
Ştefan Frunză (1977)
Czechoslovak Mathematical Journal
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Ştefan Frunză (1977)
Czechoslovak Mathematical Journal
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P. A. Cojuhari, A. M. Gomilko (2008)
Studia Mathematica
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The paper is concerned with conditions guaranteeing that a bounded operator in a reflexive Banach space is a scalar type spectral operator. The cases where the spectrum of the operator lies on the real axis and on the unit circle are studied separately.
T. L. Miller, Michael M. Neumann (2002)
Czechoslovak Mathematical Journal
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It is shown that the sum and the product of two commuting Banach space operators with Dunford’s property have the single-valued extension property.
J. Janas (1984)
Annales Polonici Mathematici
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Florian-Horia Vasilescu (1980)
Czechoslovak Mathematical Journal
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