JIPAM logo: Home Link
 
Home Editors Submissions Reviews Volumes RGMIA About Us
 

   
  Volume 7, Issue 3, Article 117
 
Fekete-Szegö Functional for some Subclass of Non-Bazilevic Functions

    Authors: T.N. Shanmugam, M.P. Jeyaraman, S. Sivasubramanian,  
    Keywords: Analytic functions, Starlike functions, Subordination, Coefficient problem, Fekete-Szegö inequality.  
    Date Received: 18/11/05  
    Date Accepted: 24/03/06  
    Subject Codes:

Primary 30C45.

 
    Editors: Alexandru Lupas (1942-2007),  
 
    Abstract:

In this present investigation, the authors obtain a sharp Fekete-Szegö's inequality for certain normalized analytic functions $ f(z)$ defined on the open unit disk for which $ (1+ beta)left( frac{z}{f(z)}right)^{alpha}- beta f^{prime}(z) left( frac{z}{f(z)}right)^{1+alpha}, $ $ ( beta in mathbb{C}, 0 < alpha < 1 )$ lies in a region starlike with respect to $ 1$ and is symmetric with respect to the real axis. Also, certain applications of our results for a class of functions defined by convolution are given. As a special case of this result, Fekete-Szegö's inequality for a class of functions defined through fractional derivatives is also obtained.

         
       
  Download Screen PDF
  Download Print PDF
  Send this article to a friend
  Print this page
 

      search [advanced search] copyright 2003 terms and conditions login