Double Integral Operators Concerning Starlike of Order

نویسندگان

  • Kazuo Kuroki
  • Shigeyoshi Owa
  • Stevo Stevic
چکیده

Double integral operators which were considered by S. S. Miller and P. T. Mocanu Integral Transform. Spec. Funct. 19 2008 , 591–597 are discussed. In order to show the analytic function f z is starlike of order β in the open unit disk U, the theory of differential subordinations for analytic functions is applied. The object of the present paper is to discuss some interesting conditions for f z to be starlike of order β in U concerned with second-order differential inequalities and double integral operators.

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تاریخ انتشار 2009