Strong Differential Subordination and Superordination for Multivalently Meromorphic Functions Involving the Hurwitz–Lerch Zeta Function

Abstract

An integral operator for meromorphic multivalent function in the punctured unit disk is introduced by means of Hurwitz–Lerch Zeta function. Strong differential subordination and superordination results associated with the operator are obtained by investigating appropriate classes of admissible functions.