摘要
主要研究了高阶线性微分方程f(k)+Ak-1f(k-1)+…+A0f=F的亚纯解的零点问题.如果A0(z),A1(z),…,Ak-1(z),F(z)≠0为亚纯函数,且当A0(z)比其它Aj(z)(j≠0)有较快增长级时,得到了该微分方程亚纯解的零点收敛指数的精确估计式.
In this paper , we investigated the zeros of meromorphic solutions of higher order linear differential equations
f^(k)+Ak-1f^(k-1)+…+A0f=F
where A0(z),A1(z),…,Ak-1(z),F(z)≠0 re meromorphic functions,when A0(z) has larger growth than any other Aj(z)(j≠0) , we obtain some precise estimates of the exponent of convergence of the zero-sequence of meromorphic solutions for the above equation.
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2006年第2期173-175,共3页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(10161006)
关键词
微分方程
亚纯函数
级
收敛指数
differential equation
meromorphic function
the order of growth
exponent of convergence