References
W. A. Beck andC. R. Putnam, A note on normal operators and their adjoints. J. Lond. Math. Soc.31, 213–216 (1956).
J. Bram, Subnormal operators. Duke Math. J.22, 75–94 (1955).
J. B.Conway, Subnormal Operators. Research Notes in Mathematics51, London-New York 1980.
C. Davis andP. Rosenthal, Solving linear operator equations. Canad. J. Math.26, 1384–1389 (1974).
T. Furuta, On relaxation of normality in the Putnam-Fuglede theorem. Proc. Amer. Math. Soc.77, 324–328 (1979).
A. Kobayashi andT. Okayasu, A remark on a theorem of Goya and Sâito. Math. Japan.24, 549–550 (1982).
S. Kurepa, Onnth roots of normal operators. Math. Z.78, 285–292 (1962).
W. Rehder, On the adjoints of normal operators. Arch. Math.37, 169–172 (1981).
A. E.Taylor and D. C.Lay, Introduction to Functional Analysis, Second Edition. New York 1980.
T. Yoshino, Subnormal operators with a cyclic vector. Tôhoku Math. J.21, 47–55 (1969).
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Duggal, B.P. Subnormal operators and their adjoints. Arch. Math 42, 470–473 (1984). https://doi.org/10.1007/BF01190698
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DOI: https://doi.org/10.1007/BF01190698