Characterizations Of Upper And Lower (Α, Β, Θ, Δ, I)-Continuous Multifunctions

Let (X, τ ) and (Y, σ) be topological spaces in which no separation axioms are assumed, unless explicitly stated and if I is an ideal on X. Given a multifunction F : (X, τ ) → (Y, σ), α, β operators on (X, τ ), θ, δ operators on (Y, σ) and I a proper ideal on X. We introduce and study upper and lowe...