School of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Selangor D. Ehsan, Bangi 43600, Malaysia
Academic Editor: Stanisława R. Kanas
Copyright © 2010 Ma'moun Harayzeh Al-Abbadi and Maslina Darus. This is an open access article distributed under the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
M. H. Al-Abbadi and M. Darus (2009) recently introduced a new generalized derivative
operator , which generalized many well-known operators studied earlier
by many different authors. In this present paper, we shall investigate a new
subclass of analytic functions in the open unit disk which is defined by new generalized derivative operator. Some results on coefficient inequalities, growth and distortion theorems, closure theorems, and extreme points of analytic functions belonging to the subclass are obtained.