The class of D(T)–operators on Hilbert space

	The class of D(T)–operators on Hilbert space
International Journal of Nonlinear Analysis and Applications
دوره 12، Special Issue، اسفند 2021، صفحه 1293-1298 اصل مقاله (327.97 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22075/ijnaa.2021.5645
نویسنده
Elaf S Abdulwahid^*
Tikrit University – College of Education for Women/ Department of Mathematics, Iraq
چکیده
The purpose of this paper is to introduce a new class operator on separable Hilbert space. The operator T ∈ B(H) is called D(T)-operator if there exist U ∈ B(H), U≠0, I such that T^TU = UTT, where T* adjoint operator of T. Then, some main properties of the class of D(T)-operator are studied in this research.
کلیدواژه‌ها
D(T)-operator؛ quasi-normal operator؛ The sepctrum of normal oprator؛ Hilbert space
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