D-hyponormal and D-quasi-hyponormal Operators
DOI:
https://doi.org/10.26713/cma.v13i3.1708Keywords:
Drazin inverse, D-hyponormal operator, D-quasi-hyponormal operator, Fuglede-Putnam theoremAbstract
New classes of operators named D-hyponormal, and D-quasi-hyponormal are introduced in this paper. Some basic properties of these operators are presented. An investigation of extensions of the Fuglede-Putnam theorem for D-hyponormal operators is given.
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