A new class of harmonic functions associated with a (p,q)-Ruscheweyh operator

With the use of post-quantum or (p; q)-calculus, in this paper we define a new class S0H (n; p; q; ) of certain harmonic functions f 2 S0H associated with a (p; q)-Ruscheweyh operator Rn p;q: or functions in this class, we obtain a necessary and sufficient convolution condition. A sufcient coeffcient inequality is given for functions f 2 S0H (n; p; q; ). It is proved that this coeffcient uality necessary for functions in its subclass TS0H (n; p; q; ): Certain properties such as convexity, compactness and results on bounds, extreme points are also derived for functions in the subclass H(n; p; q; ).