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OSCILLATION CRITERIA FOR HIGHER-ORDER FUNCTIONAL DIFFERENTIAL EQUATION OF MIXED TYPE
被引：0
作者：
程远纪
机构：
[1] Xinxiang 453002
[2] PRC
[3] Department of Mathematics
[4] Henan Normal University
关键词：
oscillation;
deviating arguments;
linearity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper we discuss the oscillation of solutions of the following difference-differential equation of the higher orderwhere Pi,τi,qi,σj are constants, the deviating arguments τi,σi may be either positive or negative, qi,…qm have the same sign. We show that the necessary and sufficient condition for all solutions of the above equation to be oscillatory is the associated characteristic equation having no real roots.
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页码：1281 / 1293
页数：13
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