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most citedOn (N,M)-a-normal And (N, M)-a-quasinormal Semi- Hilbert Space Operators

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math.FA2019

Davis-Wielandt shells of semi-Hilbertian space operators and its applications

Kais Feki, Sid Ahmed Ould Ahmed Mahmoud

In this paper we generalize the concept of Davis-Wielandt shell of operators on a Hilbert space when a semi-inner product induced by a positive operator is considered. Moreover…