Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4619586 | Journal of Mathematical Analysis and Applications | 2010 | 9 Pages |
Abstract
Let H be a separable Hilbert space and Bsa(H) the set of all bounded linear self-adjoint operators. We say that A,B∈Bsa(H) quasi-commute if there exists a nonzero ξ∈C such that AB=ξBA. Bijective maps on Bsa(H) which preserve quasi-commutativity in both directions are classified.
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