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用超几何函数定义的解析函数的性质
Properties of Analytic Functions Defined by Hypergeometric Functions
【摘要】 引进单位圆盘内解析函数类 T(λ,A,B)(λ≥ 0,- 1≤ A< B ≤1,B ≥ 0).给定 F1(z)=zF(a,b;c;z),这里F(a,b;c;z)是超几何函数,我们对a,b,c,A;B,λ,μ确定条件,使得函数(1-μ)F1(z)+ μzF1’(z)(μ ≥ 0)属于类 T(λ,A,B).
【Abstract】 A class T(λ, A, B) (λ ≥ 0, - 1 ≤ A < B ≤l and B ≥ 0) of analytic functions in the unit disk is introduced. Given the hypergeometric function F(a , b; c; z) and F1 (z) = zF(a , b; c; z) , we determine conditions on a, b, c, A, B I λ, to guarantee that (1 - )F1 (z) + zF1’ (z) (30) will be in the class T(X, A, B).
【关键词】 超几何函数;
星象函数;
凸象函数;
从属;
【Key words】 hypergeometric function; starlike function; convex function; subordination;
【Key words】 hypergeometric function; starlike function; convex function; subordination;
- 【文献出处】 常熟高专学报 ,JOURNAL OF CHANGSHU COLLEGE , 编辑部邮箱 ,2000年02期
- 【分类号】O17
- 【下载频次】244