Interpolation of Spectral Operators.
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Mathematische Zeitschrift
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Kandiah Dayanithy (1978)
Mathematische Zeitschrift
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Mathematische Zeitschrift
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Mathematische Zeitschrift
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C.D. Aliprantis, Y.A. Abramovich (1994)
Mathematische Zeitschrift
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C.D. Aliprantis, Y.A. Abramovich (1992)
Mathematische Zeitschrift
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John Roy Dennett (1973)
Mathematische Zeitschrift
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Desmond W. Evans (1971)
Mathematische Zeitschrift
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R. Michael F. Moss (1970)
Mathematische Zeitschrift
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Larry Smith (1970)
Mathematische Zeitschrift
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Robin Harte, Micheál ó Searcóid (1986)
Mathematische Zeitschrift
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P. Mladenović (1984)
Matematički Vesnik
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Jaak Peetre (1966)
Mathematische Zeitschrift
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J. Bergh (1994)
Mathematische Zeitschrift
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Constantin Costara (2005)
Studia Mathematica
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We give several characterizations of the symmetrized n-disc Gₙ which generalize to the case n ≥ 3 the characterizations of the symmetrized bidisc that were used in order to solve the two-point spectral Nevanlinna-Pick problem in ℳ ₂(ℂ). Using these characterizations of the symmetrized n-disc, which give necessary and sufficient conditions for an element to belong to Gₙ, we obtain necessary conditions of interpolation for the general spectral Nevanlinna-Pick problem. They also allow us...