Certain Subclasses of Meromorphically q-Starlike Functions Associated with the q-Derivative Operators

摘要

We establish several general results concerning the partial sums of meromorphically starlike functions defined by means of a certain class of q-derivative (or q-difference) operators. The familiar concept of neighborhood for meromorphic functions is also considered. Moreover, by using a Ruscheweyh-type q-derivative operator, we define and study another new class of functions emerging from the class of normalized meromorphic functions.

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