epartment of Mathematics, Faculty of Electrical Engineering, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovak Republic
Bibliografia
[1] Š. Drahovský and M. Zajac, Hyperreflexive operators on finite dimensional Hilbert spaces, Math. Bohem. 118 (1993), 249-254.
[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.
[5] M. Zajac, A quasi-nilpotent operator with reflexive commutant, Studia Math. 118 (1996), 277-283.
[6] M. Zajac, Rate of convergence to zero of powers of an hyper-reflexive operator, in: Proceedings of Workshop on Functional Analysis and its Applications in Mathematical Physics and Optimal Control (Nemecká, 1997).