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On a New Class of Generalized Normal Operators

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Abstract

In this paper we introduce and analyze a new class of generalized normal operators, namely skew D-quasi-normal operators, for a bounded linear operator T on a Hilbert space \(\mathcal {H}\) using the Drazin \(T^D\) inverse of T. After establishing the basic properties of such operators, we give examples and discuss how this class of operators is distinct from several other operator classes. We also generalize a very famous result on normal operators, due to Fuglede.

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Acknowledgements

The authors would like to thank the referees for their valuable comments and suggestions, which allowed improving considerably the writing of the paper.

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Authors and Affiliations

  1. Faculty of Mathematics, University of Kurdistan, P. O. Box: 416, Sanandaj, Islamic Republic of Iran

    M. Dana & R. Yousefi

Authors
  1. M. Dana
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  2. R. Yousefi
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Correspondence to M. Dana.

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Communicated by Daniel Aron Alpay.

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Dana, M., Yousefi, R. On a New Class of Generalized Normal Operators. Complex Anal. Oper. Theory 13, 3569–3578 (2019). https://doi.org/10.1007/s11785-019-00916-z

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  • DOI: https://doi.org/10.1007/s11785-019-00916-z

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