TY - JOUR AU - H. M. Srivastava AU - M. Tahir AU - B. Khan AU - M. Darus AU - N. Khan AU - Q. Z. Ahmad PY - 2021/09/16 Y2 - 2024/03/28 TI - Certain subclasses of meromorphically $q$-starlike functions associated with the $q$-derivative operators JF - Ukrains’kyi Matematychnyi Zhurnal JA - Ukr. Mat. Zhurn. VL - 73 IS - 9 SE - Research articles DO - 10.37863/umzh.v73i9.814 UR - https://umj.imath.kiev.ua/index.php/umj/article/view/814 AB - UDC 517.5The purpose of the present paper is to establish several general results concerning the partial sums of meromorphically starlike functions defined here by means of a certain class of $q$-derivative (or $q$-difference) operators. The familiar concept of neighborhood for meromorphic functions are 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.  ER -