Department of Mathematics, FEI, Slovak Technical University, Ilkovičova 3, 812 19 Bratislava, Slovak Republic
Bibliografia
[1] Š. Drahovský and M. Zajac, Hyperinvariant subspaces of operators on Hilbert spaces, in: Functional Analysis and Operator Theory, Banach Center Publ. 30, Inst. Math., Polish Acad. Sci., 1994, 117-126.
[2] D. Hadwin and E. A. Nordgren, Reflexivity and direct sums, Acta Sci. Math. (Szeged) 55 (1991), 181-197.
[3] D. A. Herrero, A dense set of operators with tiny commutants, Trans. Amer. Math. Soc. 327 (1991), 159-183.
[4] W. R. Wogen, On cyclicity of commutants, Integral Equations Operator Theory 5 (1982), 141-143.