Existence for nonoscillatory solutions of higher order nonlinear neutral differential equations

Yong Zhou; Bing Gen Zhang; Y. Q. Huang

Czechoslovak Mathematical Journal (2005)

  • Volume: 55, Issue: 1, page 237-253
  • ISSN: 0011-4642

Abstract

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Consider the forced higher-order nonlinear neutral functional differential equation d n d t n [ x ( t ) + C ( t ) x ( t - τ ) ] + i = 1 m Q i ( t ) f i ( x ( t - σ i ) ) = g ( t ) , t t 0 , where n , m 1 are integers, τ , σ i + = [ 0 , ) , C , Q i , g C ( [ t 0 , ) , ) , f i C ( , ) , ( i = 1 , 2 , , m ) . Some sufficient conditions for the existence of a nonoscillatory solution of above equation are obtained for general Q i ( t ) ( i = 1 , 2 , , m ) and g ( t ) which means that we allow oscillatory Q i ( t ) ( i = 1 , 2 , , m ) and g ( t ) . Our results improve essentially some known results in the references.

How to cite

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Zhou, Yong, Zhang, Bing Gen, and Huang, Y. Q.. "Existence for nonoscillatory solutions of higher order nonlinear neutral differential equations." Czechoslovak Mathematical Journal 55.1 (2005): 237-253. <http://eudml.org/doc/30941>.

@article{Zhou2005,
abstract = {Consider the forced higher-order nonlinear neutral functional differential equation \[ \frac\{\{\mathrm \{d\}\}^n\}\{\{\mathrm \{d\}\}t^n\}[x(t)+C(t) x(t-\tau )]+\sum ^m\_\{i=1\} Q\_i(t)f\_i(x(t-\sigma \_i))=g(t), \quad t\ge t\_0, \] where $n, m \ge 1$ are integers, $\tau , \sigma _i\in \{\mathbb \{R\}\}^+ =[0, \infty )$, $C, Q_i, g\in C([t_0, \infty ), \{\mathbb \{R\}\})$, $f_i\in C(\mathbb \{R\}, \mathbb \{R\})$, $(i=1,2,\dots ,m)$. Some sufficient conditions for the existence of a nonoscillatory solution of above equation are obtained for general $Q_i(t)$$(i=1,2,\dots ,m)$ and $g(t)$ which means that we allow oscillatory $Q_i(t)$$(i=1,2,\dots ,m)$ and $g(t)$. Our results improve essentially some known results in the references.},
author = {Zhou, Yong, Zhang, Bing Gen, Huang, Y. Q.},
journal = {Czechoslovak Mathematical Journal},
keywords = {neutral differential equations; nonoscillatory solutions; neutral differential equations; nonoscillatory solutions},
language = {eng},
number = {1},
pages = {237-253},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Existence for nonoscillatory solutions of higher order nonlinear neutral differential equations},
url = {http://eudml.org/doc/30941},
volume = {55},
year = {2005},
}

TY - JOUR
AU - Zhou, Yong
AU - Zhang, Bing Gen
AU - Huang, Y. Q.
TI - Existence for nonoscillatory solutions of higher order nonlinear neutral differential equations
JO - Czechoslovak Mathematical Journal
PY - 2005
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 55
IS - 1
SP - 237
EP - 253
AB - Consider the forced higher-order nonlinear neutral functional differential equation \[ \frac{{\mathrm {d}}^n}{{\mathrm {d}}t^n}[x(t)+C(t) x(t-\tau )]+\sum ^m_{i=1} Q_i(t)f_i(x(t-\sigma _i))=g(t), \quad t\ge t_0, \] where $n, m \ge 1$ are integers, $\tau , \sigma _i\in {\mathbb {R}}^+ =[0, \infty )$, $C, Q_i, g\in C([t_0, \infty ), {\mathbb {R}})$, $f_i\in C(\mathbb {R}, \mathbb {R})$, $(i=1,2,\dots ,m)$. Some sufficient conditions for the existence of a nonoscillatory solution of above equation are obtained for general $Q_i(t)$$(i=1,2,\dots ,m)$ and $g(t)$ which means that we allow oscillatory $Q_i(t)$$(i=1,2,\dots ,m)$ and $g(t)$. Our results improve essentially some known results in the references.
LA - eng
KW - neutral differential equations; nonoscillatory solutions; neutral differential equations; nonoscillatory solutions
UR - http://eudml.org/doc/30941
ER -

References

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