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DIFFERENTIAL SUBORDINATION AND SUPERORDINATION FOR CERTAIN SUBCLASSES OF ANALYTIC FUNCTIONS
C. Selvaraj (India) and K. R. Karthikeyan (India)
Received January 1, 2008
Abstract
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By making use of the generalized differential operator, we derive the subordination and superordination results for certain normalized analytic functions in the open unit disk. Many well-known and new results are shown to follow as special cases of our results. |
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Keywords and phrases:
analytic functions, superordination, subordination, differential operators. |
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