Document Type : Research Paper

**Authors**

Department of Mathematics, Payame Noor University (PNU), P.O.Box: 19395-3697, Tehran, Iran.

**Abstract**

In this paper, by making use of $(p , q) $-derivative operator we introduce a new subclass of meromorphically univalent functions. Precisely, we give a necessary and sufficient coefficient condition for functions in this class. Coefficient estimates, extreme points, convex linear combination, Radii of starlikeness and convexity and finally partial sum property are investigated.

**Keywords**

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