摘要
设f是平面内超越亚纯函数,满足N(r,f)=S(r,f).P[f]是f的多项式,Q[f]是f的微分多项式。本文考虑了形如P[f]f'+Q[f](特殊情形为f ̄nf'+Q[f]及P[f]f'-C,C为常数)的微分多项式的值分布,推广并改进了W.K.Hayman,J.Clunie,E.Mues等人关于整函数的一些结果。
Let f be a transcendental meromorphic function with,P[f]be a polynomial in f and Q[f]be a differential polynomial inf.In this pa-per the value-distribution of differential polynomials of the form P [f]f'+Q[f](special cases are f ̄nf'+Q[f]and P[f]f'-c,where c is a constant)is studied.The resuLts for entire functions of W.K. Hayman,J.Clunie and E.Mues are extended and improved.
出处
《数学进展》
CSCD
北大核心
1994年第4期336-341,共6页
Advances in Mathematics(China)
关键词
整函数
半纯函数
微分多项式
meromorphic function
entire function
the value-distribution