Abstract
Let \({\mathcal {M}}\) be a von Neumann algebra with no central summands of type \(I_1\). Assume that \(\Phi :{\mathcal {M}} \rightarrow {\mathcal {M}}\) is a surjective map and \(\Phi (I)\) is an unitary operator. It is shown that \(\Phi \) is strong bi-skew commutativity preserving (that is, \(\Phi \) satisfies \(\Phi (A)\Phi (B)^*- \Phi (B)\Phi (A)^*= AB^*- BA^*\) for all \(A, B \in \mathcal M\)) if and only if there exists a self-adjoint central operator \(Z \in {\mathcal {M}}\) with \(Z^2=I\) such that \(\Phi (A) = ZA\Phi (I)\) for all \(A \in {\mathcal {M}}\). The strong bi-skew commutativity preserving maps on prime algebras with involution are also characterized.
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Communicated by Saeid Maghsoudi.
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This work is partially supported by National Natural Science Foundation of China (12171290) and Fund Program for the Scientific Activities of Selected Returned Overseas Professionals in Shanxi Province (20200011).
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Qi, X., Chen, S. Strong Bi-skew Commutativity Preserving Maps on von Neumann Algebras. Bull. Iran. Math. Soc. 49, 15 (2023). https://doi.org/10.1007/s41980-023-00759-7
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DOI: https://doi.org/10.1007/s41980-023-00759-7
Keywords
- Skew Lie products
- Bi-skew Lie products
- Strong bi-skew commutativity preserving maps
- von Neumann algebras
- Prime algebras