On partial differential inequalities of the first order
P. Besala (1971)
Annales Polonici Mathematici
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P. Besala (1971)
Annales Polonici Mathematici
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Mohammad El-Haddad, Fuad Kittaneh (2007)
Studia Mathematica
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We give several sharp inequalities involving powers of the numerical radii and the usual operator norms of Hilbert space operators. These inequalities, which are based on some classical convexity inequalities for nonnegative real numbers and some operator inequalities, generalize earlier numerical radius inequalities.
J. M. Gandhi (1970)
Matematički Vesnik
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B. Martić (1975)
Matematički Vesnik
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D. Ž. Đoković (1967)
Publications de l'Institut Mathématique
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A. K. Varma, J. Prasad (1970)
Annales Polonici Mathematici
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J. D. Kečkić, I. B. Lacković (1970)
Matematički Vesnik
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Josip E. Pečarić (1982)
Publications de l'Institut Mathématique
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Paul R. Beesack (1977)
Annales Polonici Mathematici
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Kazimierz Włodarczyk (1980)
Annales Polonici Mathematici
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Branislav Martić (1979)
Publications de l'Institut Mathématique
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Omar Hirzallah, Fuad Kittaneh, Khalid Shebrawi (2012)
Studia Mathematica
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We derive several numerical radius inequalities for 2 × 2 operator matrices. Numerical radius inequalities for sums and products of operators are given. Applications of our inequalities are also provided.