近于凸函数的一些子类

Some Subclasses of Ceose-to-Convex Functions

文中给出了近于凸函数的一些子类．给出了这些子类的系数界．增长定理，导函数增长定理，导函数的幅角估计，一些形式的积分平均，组出了这些子类的闭凸包．导函数的闭凸包，给出了闭凸包的极端点及导函数闭凸包极场点的部分刻画，特别地推广了文献［１］中的结果．

Some subclasses of close-to-convex funcfions,their coemcient boundaries,incremental theories, derived function incremental theories,argunent estimates of derived functions, some forms of integrete average arc presentes.The closed convex huces, closed convex hulls of the direved functions are shown. We aseo presented the extreme points of the closed convex hulls and the partial description of the extreme points of closed derived function convex hulls. The results given in [1] are exfended.