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On Neighborhoods of a Certain Class of Complex Order Defined by Ruscheweyh Derivative Operator  
 
  Authors: Öznur Özkan, Osman Altintas,  
  Keywords: Analytic function, Hadamard product, $delta -$ neighborhood, Subordination, Close-to-convex function.  
  Date Received: 06/10/05  
  Date Accepted: 09/03/06  
  Subject Codes:

30C45.

  
  Editors: Gabriela Kohr,  
 
  Abstract:

In this paper, we introduce the subclass $ R_{b}^{lambda }left( A,B,alpha ,mu right) $ which is defined by concept of subordination. According to this, we obtain a necessary and sufficient condition which is equivalent to this class. Further, we apply to the $ delta -$ neighborhoods for belonging to $ R_{b}^{lambda }left( A,B,alpha ,mu right) $ to this condition.;


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