On the spectrum of a nonlinear operator
Jiří Souček, Vladimír Souček (1974)
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Jiří Souček, Vladimír Souček (1974)
Czechoslovak Mathematical Journal
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Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică
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GH. Mocanu (1974)
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2000 Mathematics Subject Classification: 47A10, 47A13. In this paper, we give a description of Taylor spectrum of commuting 2-contractions in terms of characteritic functions of such contractions. The case of a single contraction obtained by B. Sz. Nagy and C. Foias is generalied in this work.
Andrzej Pokrzywa (1985)
Studia Mathematica
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V. Rakočević (1981)
Matematički Vesnik
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