Existence of positive solutions for a neutral differential equation with positive and negative coefficients

被引：6
|
作者：
Ocalan, Ozkan [1 ]
机构：
[1] Afyon Kocatepe Univ, Fac Sci & Arts, Dept Math, TR-03200 Afyon, Turkey
来源：
APPLIED MATHEMATICS LETTERS | 2009年 / 22卷 / 01期
关键词：
Differential equation; Delay; Neutral; Positive solution; Positive and negative coefficients; OSCILLATION;
D O I：
10.1016/j.aml.2008.02.009
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
This work is concerned with the existence of positive solutions for the neutral delay Received 27 November 2006 differential equation with positive and negative coefficients [x(t) - R(t)x(t - r)]' + P(t)x(t - tau) - Q(t)x(t - sigma) = 0. where P, Q, R is an element of C ([t(0), infinity), R(+)), r > 0, tau >= sigma >= 0. (C) 2008 Elsevier Ltd. All rights reserved.
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页码：84 / 90
页数：7
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