Certain classes of functions multivalent in the unit disc (Q1326520)
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scientific article; zbMATH DE number 569214
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Certain classes of functions multivalent in the unit disc |
scientific article; zbMATH DE number 569214 |
Statements
Certain classes of functions multivalent in the unit disc (English)
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20 February 1995
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Certain classes of multivalent functions with negative coefficients are defined in the unit disc and their properties such as coefficient estimates, distortion and covering results and radius of convexity problems are studied. It is also shown that these classes are closed under arithmetic mean and convex linear combinations.
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multivalent functions
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convex combination
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negative coefficients
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0.9195908308029176
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0.8816789984703064
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