一类具有时变时滞的中立型动力方程的非振动性  

Nonoscillation for a Class of Neutral Dynamic Equation with Time-Delays

作　　者：刘兰初[1] LIU Lan chu(College of Science, Hunan Institute of Engineering, Xiangtan 411104, China)

机构地区：[1]湖南工程学院理学院,湘潭411104

出　　处：《湖南工程学院学报（自然科学版）》2018年第3期36-38,共3页Journal of Hunan Institute of Engineering(Natural Science Edition)

摘　　要：考虑具有变时滞中立型动力方程(x(t)-x(t-τ(t)))′+q(t)x(t-σ(t))=0的非振动性,给出了该方程非振动解几种分类,并获得了某些非振动类型解存在的充分条件.In this paper, we consider nonoscillation of the following neutral dynamic equation with time de lays （x（t）-x（t -r（t）））＇ ＋q（t）x（t-σ（t）） =0. A few types of nonoscillatory solutions are given and some sufficient conditions for the nonoscillation of the equation are provided.

关 键 词：中立型 时变时滞 非振动 

分 类 号：O175.7[理学—数学]