摘要
运用Nevanlinna值分布的理论和方法,研究了2阶亚纯系数线性微分方程f″+Af'+Bf=0解的增长性,在假设A或B具有有限或无穷亏值的不同条件下,证明了方程的每一非零解的增长级均为无穷.
By using the fundamental theory and method of value distribution of Nevanlinna,the growth of solutions of the second order linear differential equations f ″+Af ′+Bf=0 is considered where A(z) and B(z) are meromorphic function.Assuming A(z) or B(z) have a finite or infinite deficient value,it was proved that every solution f≠0 of the complex differential equation has infinite order.
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2013年第2期171-174,共4页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(11171170)资助项目
关键词
微分方程
亚纯函数
亏值
无穷级
differential equations
meromorphic function
deficient value
infinite order