一类单叶调和函数的几个性质

为了研究负系数单叶调和函数,用Salagean算子定义了两类函数类SmH(λ,α,β)及其子族SmH(λ,α,β),研究了这两类函数类的充要条件、偏差估计、凸像性质等,得到了准确的结果,推广了一些作者的相关结果.

Some Properties of A Kind of Univalent Harmonic Functions

In order to study the univalent harmonic functions with negative coefficients, two function subclas-ses S^mH（λ,α,β） and S^mH（λ,α,β） defined by Salagean operator are introduced. The sufficient and necessary con-dition , distortion properties and convexity of the two subclasses are studied. Some accurate results are ob-tained, which generalize the related results of some authors.