About sign-constancy of Green's function of a two-point problem for impulsive second order delay equations

被引:1
作者
Domoshnitsky, Alexander [1 ]
Landsman, Guy [2 ]
Yanetz, Shlomo [2 ]
机构
[1] Ariel Univ, Ariel, Israel
[2] Bar Ilan Univ, Ramat Gan, Israel
关键词
impulsive equations; Green's functions; positivity/negativity of Green's functions; boundary value problem; second order; BOUNDARY-VALUE-PROBLEMS; MULTIPLE POSITIVE SOLUTIONS; DIFFERENTIAL-EQUATIONS; OSCILLATION; STABILITY;
D O I
10.14232/ejqtde.2016.8.9
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We consider the following second order differential equation with delay { (Lx) (t) x ''(t) + Sigma(p)(j=1) a(j)(t)x'(t - tau(j) (t)) + Sigma(p)(j=1) b(j)(t)x(t - theta(j)(t)) = f(t), t is an element of [0, omega] x(t(k)) = gamma(k)x(t(k) - 0), x'(t(k)) = delta(k)x'(t(k) - 0), k = 1, 2, ..., r. In this paper we find sufficient conditions of positivity of Green's functions for this impulsive equation coupled with two-point boundary conditions in the form of theorems about differential inequalities.
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页数:16
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