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Maps on self-adjoint operators preserving some relations related to commutativity

  • Mahdi Karder EMAIL logo and Tatjana Petek
Published/Copyright: December 6, 2024
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Abstract

In this paper, we give the complete description of maps on self-adjoint bounded operators on Hilbert space which preserve a triadic relation involving the difference of operators and either commutativity or quasi-commutativity in both directions. We show that those maps are implemented by unitary or antiunitary equivalence and possible additive perturbation by a scalar operator.

Funding statement: The first author would like to acknowledge the faculty of Mathematics, University of Zabol, for their support and contribution to this study. The second author is supported by the Slovenian Research and Innovation Agency (core research program P1-0306)

Acknowledgement

We are sincerely grateful to the referee for the thorough review and insightful feedback.

  1. Communicated by Emanuel Chetcuti

References

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Received: 2024-04-30
Accepted: 2024-07-17
Published Online: 2024-12-06
Published in Print: 2024-12-15

© 2024 Mathematical Institute Slovak Academy of Sciences

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