Selfadjoint Extension Operators Commuting with an Algebra.
Palle E.T. Jorgensen (1979)
Mathematische Zeitschrift
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Palle E.T. Jorgensen (1979)
Mathematische Zeitschrift
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Rainer Wüst (1973)
Mathematische Zeitschrift
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Mohammed Hichem Mortad (2011)
Colloquium Mathematicae
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We present a new approach to the question of when the commutativity of operator exponentials implies that of the operators. This is proved in the setting of bounded normal operators on a complex Hilbert space. The proofs are based on some results on similarities by Berberian and Embry as well as the celebrated Fuglede theorem.
Christer Borell (1982)
Mathematische Zeitschrift
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Mecheri, Salah (2005)
Revista Colombiana de Matemáticas
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Vladimir Rakočević (2000)
Publications de l'Institut Mathématique
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Messirdi, Bekkai, Mortad, Mohammed Hichem (2008)
Banach Journal of Mathematical Analysis [electronic only]
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M. R. Dostanić (1989)
Matematički Vesnik
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Tsuyoshi Ando, Fan Ky (1979)
Mathematische Zeitschrift
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Volker Wrobel (1980)
Mathematische Zeitschrift
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Rainer Wüst (1971)
Mathematische Zeitschrift
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Hubert Kalf (1972)
Mathematische Zeitschrift
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Sever Silvestru Dragomir (2017)
Concrete Operators
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Some trace inequalities of Shisha-Mond type for operators in Hilbert spaces are provided. Applications in connection to Grüss inequality and for convex functions of selfadjoint operators are also given.
Vasile I. Istratescu (1972)
Mathematische Zeitschrift
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