Operators and Matrices · Volume 8, Issue 3 Rank-one perturbations of normal operators and hyponormality 08-38 Pages 691-698 DOI 10.7153/oam-08-38 Downloads Short PDF Full PDF PNG Authors Il Bong Jung Eun-Young Lee Keywords normal operator hyponormal operator rank-one perturbation commutator Subject classes 47B20 47A63 47A55