Operators and Matrices · Volume 14, Issue 2 On power Drazin normal and Drazin quasi-normal Hilbert space operators 14-37 Pages 523-533 DOI 10.7153/oam-2020-14-37 Downloads Short PDF Full PDF PNG Authors B. P. Duggal In Hyoun Kim Keywords Drazin invertible operator structure of [(n,m)DN] operators n-th root of normal operator commutativity theorem Subject classes 47A15 47B15 47B20
