On some generalizations of (n,m)-normal powers operators onHilbert space

Eiman H. Abood, Mustafa A. Al-loz

Abstract


Recall that an operator T  is called (n,m)-normal powers operator if and only if   for some nonnegative integers  and .Throughout this paper,we introduce some types of generalizations of (n,m)-normal powers operatorsand study  some of them properties.


Keywords


Normal operators, (n,m)-normal powers operator, n-power quasi-normaloperator, n-power class (Q).

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References


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