3. The sub-class of harmonic univalence function in terms of differential sub-ordinations
The purpose of this research is to propose a novel class of harmony function in terms of sub-ordinations. We identify essential and adequate condition, radius of starliness and convex and compact for these classes of function. Furthermore, extreme point theorem is used for obtaining coefficient estimate, distortion theorem for these classes of function. Finally, few results are pointed out on this paper.