Introduction

Let B represent the unit ball of H∞(D) where H∞(D) is the Hardy space consisting of functions which are bounded and analytic in the open unit disk D. That is, let B := {f ∈ H∞(D) : ‖f‖L∞(D) ≤ 1} where ‖f‖L∞(D) = supz∈D |f(z)|. Many mathematicians have studied the norms of operators acting on this space.