مشخصات پژوهش

عنوان	On the classes of D-normal operators and D-quasi-normal operators on Hilbert space‎
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Drazin inverse; n-normal operators; quasi-normal operators; n-power quasi-normal operators‎.
چکیده	‎The purpose of this paper is to introduce some new classes of operators‎, ‎called [DN]‎, ‎[nDN]‎, ‎[DQN]‎, ‎[nDQN],‎ ‎associated with a Drazin invertible operator using its Drazin inverse‎. ‎[nDN] and [nDQN] operatots extend the notion of [DN] and [DQN] operators‎, ‎respectively‎. ‎The relations between these classes and some basic properties of these operators are studied in this study‎.
پژوهشگران	رامش یوسفی (نفر دوم)، منصور دانا (نفر اول)