A criterion for starlikeness (Q5906691)
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scientific article; zbMATH DE number 727763
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A criterion for starlikeness |
scientific article; zbMATH DE number 727763 |
Statements
A criterion for starlikeness (English)
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6 September 1995
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Let \(f\) be analytic in \(D = \{z : | z | < 1\}\), \(f(0) = 0\). The authors prove that if \(| zf'' (z)/f' (z) + 1| < 2,3776\), then \(f\) is starlike in \(D\).
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starlike
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