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An improved oscillation result for advanced differential equations
Applied Mathematics Letters ( IF 2.9 ) Pub Date : 2020-05-19 , DOI: 10.1016/j.aml.2020.106495
George E. Chatzarakis , George N. Miliaras

In this paper we study the advanced differential equations of the form x(t)q(t)xσ(t)=0,tt0,where q is a function of nonnegative real numbers and σ is a function of positive real numbers such that σ(t)>t, for all tt0. Based on a recursive sequence we have constructed, we improve the well known oscillation condition lim supttσ(t)q(s)ds>1 by lim supttσ(t)q(s)ds1.An example illustrating our results is also given.



中文翻译:

高级微分方程的改进振动结果

在本文中,我们研究以下形式的高级微分方程 XŤ-qŤXσŤ=0ŤŤ0哪里 q 是非负实数的函数,并且 σ 是正实数的函数,使得 σŤ>Ť, 对所有人 ŤŤ0。基于我们构造的递归序列,我们改善了众所周知的振荡条件lim supŤŤσŤqsds>1个 通过 lim supŤŤσŤqsds1个还给出了一个说明我们的结果的示例。

更新日期:2020-05-19
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