On unbounded hyponormal operators III

• Autorzy: J. Janas
• Języki publikacji: EN

Abstrakty

EN

The paper deals mostly with spectral properties of unbounded hyponormal operators. Some nontrivial examples of such operators are given.

Kategorie tematyczne

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

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Studia Mathematica
• Rocznik: 1994-1995
• Tom: 112
• Numer: 1
• Strony: 75-82

Daty

wydano

1994

otrzymano

1994-02-07

Twórcy

autor

J. Janas

• Institute of Mathematics, Polish Academy of Sciences, Cracow Branch, Św. Tomasza 30, 31-027 Kraków, Poland

Bibliografia

• [1] J. Janas, On unbounded hyponormal operators, Ark. Mat. 27 (1989), 273-281.
• [2] J. Janas, On unbounded hyponormal operators II, Integral Equations Operator Theory 15 (1992), 470-478.
• [3] T. Kato, Positive commutators i[f(P),g(Q)], J. Funct. Anal. 96 (1991), 117-129.
• [4] C. R. Putnam, The spectra of unbounded hyponormal operators, Proc. Amer. Math. Soc. 31 (1972), 458-464.
• [5] C. R. Putnam, Spectra of polar factors of hyponormal operators, Trans. Amer. Math. Soc. 188 (1974), 419-428.
• [6] M. Reed and B. Simon, Methods of Modern Mathematical Physics I: Functional Analysis, Academic Press, 1972.
• [7] J. B. Stochel, Subnormality and generalized commutation relations, Glasgow Math. J. 30 (1988), 259-262.
• [8] J. Weidmann, Linear Operators in Hilbert Spaces, Springer, 1980.
• [9] D. Xia, Spectral Theory of Hyponormal Operators, Birkhäuser, 1983.