Maps on S(H) preserving the difference of noninvertible algebraic operators

Maps on S(H) preserving the difference of noninvertible algebraic operators

The aim of this paper is to present the general structure of nonlinear surjective maps on S(H) preserving the operator pairs in which their difference is a noninvertible algebraic operator. S(H) represents the real Jordan algebra of bounded self-adjoint operators acting on an infinite dimensional Hilbert space H.

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