Caratheodory's Inequality on the Right half plane


Department of Computer Engineering, Amasya University, Merkez-Amasya 05100, Turkey



In this paper, a boundary version of Caratheodory's inequality on the right half plane is investigated.
Z(s) is an analytic function de ned in the right half of the s-plane.We derive inequalities for the
modulus of Z(s) function, jZ′(0)j, by assuming the Z(s) function is also analytic at the boundary
point s = 0 on the imaginary axis and nally, the sharpness of these inequalities is proved.