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MATHEMATICS
Estimates for the spectrum of normal operators
Karl-Peter Hadeler
Citation:
Karl-Peter Hadeler, “Estimates for the spectrum of normal operators”, Dokl. Akad. Nauk SSSR, 157:2 (1964), 284–287
Linking options:
https://www.mathnet.ru/eng/dan29829 https://www.mathnet.ru/eng/dan/v157/i2/p284
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