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Differential Sandwich Theorems for some Subclasses of Analytic Functions Involving a Linear Operator

Author(s): T. N. Shammugam | C. Ramachandran | M. Darus | S. Sivasubramanian

Journal: Acta Mathematica Universitatis Comenianae
ISSN 0862-9544

Volume: LXXVI;
Issue: 2;
Start page: 287;
Date: 2007;
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Keywords: differential subordinations | differential superordinations | sominant | subordinant

By making use of the familiar Carlson-Shaffer operator,the authors derive derive some subordination and superordination results for certain normalized analytic functions in the open unit disk. Relevant connections ofthe results, which are presented in this paper, with various other known results are also pointed out.
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