本文研究了Carathéodory函数.利用微分从属的方法,得到了单位圆盘内Carathéodory函数的某些充分条件.结果改进了文献[1,2,4,5]的结论.%The article study Carathéodory function.By using the method of differential subordinations,we give some sufficient conditions for Carathéodory function.Results generalize or improve some results due to[1],[2],and[4,5].
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