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| On a Theorem of Drasin | |
| 作者姓名： | 陈怀惠 方明亮 |
| 作者单位： | Nanjing Normal University，Nanjing Normal University |
| 基金项目： | Supported by NSFC(China). |
| 摘 要： | D. Drasin in 1969 proved that a family of holomorphic functions is normal ifevery function in the family satisfies f' - af~3≠b, where a and b are two complexnumbers and a≠0. Now, we obtain two improvements of this criterion. Theorem 1 A family {f} of holomorphic functions is normal if every functionin {f} satisfies |
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