Radii of starlikeness and convexity for functions with fixed second coefficient defined by subordination
Several radii problems are considered for functions f(z)=z+a2z2+···with fixed second coeffcient a2 . For 0≤β<1, sharp radius of starlikeness of order β for several subclasses of functions are obtained. These include the class of parabolic starlike functions, the class of Janowski starlike functio...
| 發表在: | Tamsui Oxford Journal of Mathematical Sciences 27, 3 (2011(Ag)). |
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| 格式: | Article |
| 語言: | English |
| 主題: |