Properties of Differential Subordination and Superordination for Multivalent Functions Associated with the Convolution Operators

Abstract

Using convolution (or Hadamard product), we define the El-Ashwah and Drbuk linear operator, which is a multivalent function in the unit disk U=w:w1 and w∈₵, and satisfy its specific relationship to derive the subordination, superordination, and sandwich results for this operator by using properties of subordination and superordination concepts.

Keywords

• multivalent functions
• subordination
• Hadamard product
• superordination