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  • Research Article
  • Open Access

Double Subordination-Preserving Properties for Certain Integral Operators

Journal of Inequalities and Applications20072007:083073

  • Received: 27 November 2006
  • Accepted: 4 January 2007
  • Published:


The purpose of the present paper is to obtain the sandwich-type theorem which contains the subordination- and superordination-preserving properties for certain integral operators defined on the space of normalized analytic functions in the open unit disk.


  • Analytic Function
  • Integral Operator
  • Unit Disk
  • Open Unit
  • Open Unit Disk


Authors’ Affiliations

Department of Applied Mathematics, Pukyong National University, Pusan, 608-737, South Korea
Department of Mathematics, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan


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