Elgues anissaMenkade safa2024-05-302024-05-302020-02-23Elgues anissa and Menkade safa .On the classe of n-power normal,n-power quasi-normal operators on Hilbert space. International PluridisciplinaryPhD Meeting (IPPM’20). 1st Edition, February23-26, 2020. University Of Eloued. [Visited in ../../….]. Available from [copy the link here].https://dspace.univ-eloued.dz/handle/123456789/32814Interventionin this paper we introduce the classe of n-power normal , n-power quasi norml operaors and prove some properties of n-power normal operators also we put some conditions which are necessitate the n-quasi normalite .enn-power normaln-power quasi-normal operatorsHilbert spaceIntervention