Results 101 to 110 of about 4,284 (195)

Nonoscillatory half-linear difference equations and recessive solutions

open access: yesAdvances in Difference Equations, 2005
This paper is concerned with recessive and dominant solutions for the nonoscillatory second-order half-linear difference equations \[ \Delta(a_{n}\Phi(x_{n}))+b_{n}\Phi(x_{n+1})=0, \] where \(\Delta x_{n}=x_{n+1}-x_{n}\), \(\Phi(u)=| u| ^{p-2}u\) with \(p>1\), and \(\{a_{n}\},\{b_{n}\}\) are positive real sequences for \(n\geq1\). By using a uniqueness
M. CECCHI, Z. DOSLA, MARINI, MAURO
openaire   +4 more sources

On the existence of nonoscillatory phase functions for second order differential equations in the high-frequency regime

open access: yes, 2014
We observe that solutions of a large class of highly oscillatory second order linear ordinary differential equations can be approximated using nonoscillatory phase functions.
Bremer, James   +2 more
core  

Nonoscillatory Solutions of Second Order Differential Equations with Integrable Coefficients [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
The asymptotic behavior of nonoscillatory solutions of the equation x + a ( t ) | x | γ sgn ⁡ x = 0 , γ > 0 x + a\left ( t
openaire   +2 more sources

Asymptotic solutions of forced nonlinear second order differential equations and their extensions

open access: yes, 2007
Using a modified version of Schauder's fixed point theorem, measures of non-compactness and classical techniques, we provide new general results on the asymptotic behavior and the non-oscillation of second order scalar nonlinear differential equations on
Mingarelli, Angelo B.   +1 more
core   +3 more sources

Families of Bragg-grating solitons in a cubic-quintic medium

open access: yes, 2001
We investigate the existence and stability of solitons in an optical waveguide equipped with a Bragg grating (BG) in which nonlinearity contains both cubic and quintic terms. The model has straightforward realizations in both temporal and spatial domains,
Aceves   +22 more
core   +1 more source

Necessary and sufficient conditions for oscillation of the solutions of even order differential equations

open access: yesJournal of Numerical Analysis and Approximation Theory, 2012
In this paper, we establish several necessary and sufficient conditions for oscillation of the solutions of the following even order differential equation\[x^{(n)}(t) + q(t)x^\gamma (t) = 0, \quad \mbox{$n$ is even},\]where \( q(t) \in C([t_0 ,\infty ),{\
Cheng Jin-Fa, Chu Yu-Ming
doaj   +2 more sources

NONOSCILLATORY SOLUTIONS OF DELAY DIFFERENTIAL EQUATIONS WITH OSCILLATING COEFFICIENTS

open access: yesDemonstratio Mathematica, 1992
Nonoscillatory solutions of delay differential equations with oscillatory coefficients of the form \[ y'(t)+P_ 0(t)y(t)+\sum_{i=1}^ n P_ i(t)y(t-T_ i(t))=0\tag{1} \] are considered. The main results are: Theorem 1. Consider differential equation (1), where \(P_ 0(t)\), \(P_ i(t)\) and \(T_ i(t)\) are continuous functions such that \(| P_ 0(t)|\leq P_ 0\
openaire   +2 more sources

Fite-Wintner-Leighton-Type Oscillation Criteria for Second-Order Differential Equations with Nonlinear Damping

open access: yesAbstract and Applied Analysis, 2013
Some new oscillation criteria for a general class of second-order differential equations with nonlinear damping are shown. Except some general structural assumptions on the coefficients and nonlinear terms, we additionally assume only one sufficient ...
Mervan Pašić
doaj   +1 more source

Analytical Study of the Tumbling Motions of Vehicles Entering Planetary Atmospheres [PDF]

open access: yes
The tumbling motion of vehicles entering planetary atmospheres is analyzed. A differential equation governing the tumbling motion, its arrest, and the subsequent oscillatory motion is obtained and identified as the equation for the fifth Painleve ...
Tobak, Murray
core   +1 more source

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