Scalar-type spectral operators and holomorphie semigroups.
R. de Laubenfels (1986)
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R. de Laubenfels (1986)
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W.J. Ricker (1992)
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Ki Sik Ha (1989)
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M. T. Karaev (2006)
Colloquium Mathematicae
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J. Janas (1994)
Studia Mathematica
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The paper deals mostly with spectral properties of unbounded hyponormal operators. Some nontrivial examples of such operators are given.
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.
Mostafa Mbekhta, Jaroslav Zemánek (2007)
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Irene Rousseau (2001)
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F. Räbiger, R. Schnaubelt (1996)
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Benalili, Mohammed, Lansari, Azzedine (2005)
Lobachevskii Journal of Mathematics
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S.Ya. Yakubov (1996)
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