Hayman不等式的推广（Ⅱ）  

AN EXTENSION OF HAYMANI'S INEQUALITY(Ⅱ)

作　　者：扈培础 

出　　处：《山东大学学报（自然科学版）》1994年第2期121-126,共6页Journal of Shandong University(Natural Science Edition)

基　　金：国家自然科学基金

摘　　要：结出一个界囿定理，用亚纯函数ｆ的零点密指量和ｆ的微分多项式的１－值点密指量界囿其Ｎｅｖａｎｌｉｎｎａ特征函数，推广了ＨａｙｍａｎＬａｎｇｌｅｙ等的结果．Two inequalities in value distribution are obtained. For a differential polynomial gbof a transcendental meromorphil functionf,lt shows that the Nevanlinna characteristicfunction T(r,f) is bounded from above by a linear combination of N(r,) andN(r,) unless satisfies a certain differential equation. In particular,theseinequalities extend those of Hayman,Langley and Hu.

关 键 词：值分布 Hayman 不等式 半纯函数 

分 类 号：O174.5[理学—数学]