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A remark on a class of operators. (English) Zbl 0163.37802


MSC:

47-XX Operator theory
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References:

[1] S. K. Berberian: Introduction to Hilbert Space. Oxford Univ. Press, New York (1961). · Zbl 0121.09302
[2] T. Furuta: On the class of paranormal operators. Proc. Japan Acad., 43, 594-598 (1967). · Zbl 0163.37706 · doi:10.3792/pja/1195521514
[3] V. Istratescu, T. Saito, and T. Yoshino: On a class of operators. Tohoku Math. J., 18, 410-412 (1966). · Zbl 0145.39102 · doi:10.2748/tmj/1178243383
[4] R. Schatten: Norm Ideals of Completely Continuous Operators. Springer, Berlin (1960). · Zbl 0188.44103
[5] J. G. Stampfli: Hyponormal operators. Pacif. J. Math., 12, 1453-1458 (1962). · Zbl 0129.08701 · doi:10.2140/pjm.1962.12.1453
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