علی تقوی

Let A be an algebra. Under particular assumptions on A, in this paper we determine the explicit form of any map ψ on A which satisfies ψ(A)ψ(P) + ηψ(P)ψ(A) = AP + ηPA for each A ∈ A, some idempotent or projection P ∈ A and some η ∈ C.