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【摘 要】
：
In this paper the authors study (1 -γ + zf″(z)/f′(z))/(zf′(z)/f(z)) as a criteria for starlikeness and convexity. Sharp upper bound of |a2| and of the Feket
【机 构】
：
3A/95 Azad Nagar
【出 处】
：
数学物理学报
【发表日期】
：
2004年期
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