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Strong 3-commutativity preserving maps on standard operator algebras
Authors:Mei Yun Liu  Jin Chuan Hou
Affiliation:Department of Mathematics, Taiyuan University of Technology, Taiyuan 030024, P. R. China
Abstract:Let X be a Banach space of dimension ≥ 2 over the real or complex field F and A a standard operator algebra in B(X). A map Φ:AA is said to be strong 3-commutativity preserving if[Φ(A), Φ(B)]3=[A, B]3 for all A, BA, where[A, B]3 is the 3-commutator of A, B defined by[A, B]3=[[[A, B], B], B] with[A, B]=AB -BA. The main result in this paper is shown that, if Φ is a surjective map on A, then Φ is strong 3-commutativity preserving if and only if there exist a functional h:A → F and a scalar λ ∈ F with λ4=1 such that Φ(A)=λA + h(A)I for all AA.
Keywords:3-commutators  standard operator algebras  Banach spaces  preservers  
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