用推广的Sǎlǎgean算子定义的n-螺型函数类

CERTAIN CLASS OF n-SPIRALLIKE FUNCTIONS DEFINED BY A GENERALIZED Sǎlǎgean OPERATOR

利用推广了的Sǎlǎgean算子在右半平面内的凸区域D上定义了一个n-螺型函数类,应用微分从属方法得到了这个函数类的充分条件、包含关系和积分算子等性质,所得结果推广了一些作者的相关结果.

A general class of n-spirallike functions with respect to a convex domain D contained in the right half-plane is introduced by using a generalized Sǎlǎgean operator.Sufficient condition,inclusion relation and integral operator properties of this function class are provided by applying the method of differential subordination,which extend the corresponding results of previous references.