# Subordination and Superordination for Multivalent Functions associated with the Differintegral Operator

Kwon, Oh Sang;Cho, Nak Eun

• Accepted : 2012.09.14
• Published : 2013.03.23
• 16 5

#### Abstract

The purpose of the present paper is to obtain some subordination- and superordination-preserving properties for multivalent function associated the differintegral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich type theorem for the integral operator is also considered.

#### Keywords

subordination;superordination;univalent function;convex function;differintegral operator

#### References

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#### Acknowledgement

Supported by : Pukyong National University