Mohammad Hassan Golmohammadi - Department of Mathematics, Payame Noor University (PNU), P.O.Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran.
Shahram Najafzadeh - Department of Mathematics, Payame Noor University (PNU), P.O.Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran.
Mohammad Reza Foroutan - Department of Mathematics, Payame Noor University (PNU), P.O.Box: ۱۹۳۹۵-۳۶۹۷, Tehran, Iran.

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.

Meromorphic function, (p, q)-derivative, Coefficient bound, Extreme Point, convex set, Partial sum, Hadamard product