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On the class of paranormal operators. (English) Zbl 0163.37706


MSC:

47B20 Subnormal operators, hyponormal operators, etc.
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References:

[1] T. Ando: On hyponormal operators. Proc. Amer. Math. Soc, 14, 290-291 (1963). JSTOR: · Zbl 0113.09904 · doi:10.2307/2034629
[2] T. Furuta, R. Nakamoto, and M. Horie: A remark on a class of operators (to appear). · Zbl 0163.37802 · doi:10.3792/pja/1195521517
[3] P. R. Halmos: Hilbert Space Problem Book. Van Nostrand. The University Series in Higher Mathematics (1966). · Zbl 0144.38704
[4] V. Istratescu, T. Sait6, and T. Yoshino: On a class of operators. Tohoku. Math. Journ., 18, 410-413 (1966). · Zbl 0145.39102 · doi:10.2748/tmj/1178243383
[5] G. H. Orland: On a class of operators. Proc. Amer. Math. Soc, 15, 75-79 (1964). JSTOR: · Zbl 0123.31601 · doi:10.2307/2034353
[6] T. Saito and T. Yoshino: On a conjecture of Berberian. Tohoku. Math. Journ., 17, 147-149 (1965). · Zbl 0132.35703 · doi:10.2748/tmj/1178243580
[7] J. G. Stampfli: Hyponormal operators. Pacific Journ. Math., 12, 1453-1458 (1962). · Zbl 0129.08701 · doi:10.2140/pjm.1962.12.1453
[8] J. G. Stampfli: Hyponormal operators and spectral density. Transaction of Amer. Math. Soc, 117, 469-476 (1965). JSTOR: · Zbl 0139.31201 · doi:10.1090/S0002-9947-1965-0173161-3
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