摘要
在本文中,作者研究了—类—阶中立型泛函微分方程非振动解的存在性,得到了使方程存在非振动解的若干充分必要条件。
This paper studies the existence of nonoscillatory solutions to a class of first order neutralfunctional differential equations and obtains some sufficient and necessary conditions for theexistence of nonoscillatory solutions to the equations.
出处
《华南师范大学学报(自然科学版)》
CAS
1995年第2期11-17,共7页
Journal of South China Normal University(Natural Science Edition)
关键词
-阶
中立型方程
非振动解
存在性
变系数
first order
neutral equation
nonoscillatory solution
exitence
variable coefficient