Generalised differential operator defined by analytic functions associated with negative coefficients

• Main Authors: S. Faraj Ramadan,, Maslina Darus,
• Format: Article
• Published: Penerbit Universiti Kebangsaan Malaysia 2010
• Online Access: http://journalarticle.ukm.my/1964/; http://www.ukm.my/~ppsmfst/jqma/index.html

We define a new generalised derivative operator Dm,s,µ,b for the class A of analytic functions in the unit disc U = {z∈C:|z|<1} . This operator has generalised many well known operators studied by many different authors. Also in this paper we introduce a new subclass of A using generalised de...