“…One of the original set-open topologies on C(X, Y ) is the compact-open topology t k , which was introduced by Fox [7] and further developed by Arens [2], Gale [8], Myers [24], Arens-Dugundji [3] and Jackson [12]. Later, many other set-open topologies t λ (λ ⊆ P (X)) were investigated that lie between t k and t w (the largest set-open topology) (see, e.g., [9,10,15,17,5,27,29]).…”