具有两项密指量的基本不等式  

The fundamental inequalities with two counting functions

作　　者：杨力[1] 

机构地区：[1]西安工业大学数理系,陕西西安710032

出　　处：《纺织高校基础科学学报》2008年第4期411-414,共4页Basic Sciences Journal of Textile Universities

基　　金：陕西省教育厅专项科研基金资助项目(04JK127)

摘　　要：对Hayman-Yang不等式中导数f(k)能否被替换成一般的线性微分多项式a0f+a1f′+…+akf(k)进行了研究,并彻底解决了这一问题.实例表明,所得到的几个定理的条件是基本的.It is studied whether the derivative f^（k） in Hayman-Yangrs inequality can be replaced by a general linear differential polynomial ao a0f＋a1f＇＋…＋akf^（k） or not, and is solved completely. The examples are provided to show that the conditions of two theorems obtained in the present paper are essential.

关 键 词：亚纯函数 线性微分多项式 密指量 

分 类 号：O174.52[理学—数学]