Results 41 to 50 of about 8,043,575 (337)

Forced oscillation and asymptotic behavior of solutions of linear differential equations of second order [PDF]

open access: yesOpuscula Mathematica, 2022
The paper deals with the second order nonhomogeneous linear differential equation \[(p(t) y'(t))' + q(t) y(t) = f(t),\] which is oscillatory under the assumption that \(p(t)\) and \(q(t)\) are positive, continuously differentiable and monotone functions ...
Yutaka Shoukaku
doaj   +1 more source

New Aspects for Non-Existence of Kneser Solutions of Neutral Differential Equations with Odd-Order

open access: yesMathematics, 2020
Some new oscillatory and asymptotic properties of solutions of neutral differential equations with odd-order are established. Through the new results, we give sufficient conditions for the oscillation of all solutions of the studied equations, and this ...
Osama Moaaz, Dumitru Baleanu, Ali Muhib
doaj   +1 more source

The distribution of zeros of oscillatory solutions for second order nonlinear neutral delay differential equations

open access: yesApplied Mathematics Letters, 2017
In this paper, the distance between adjacent zeros of oscillatory solutions for second order nonlinear neutral delay differential equations ( a ( t ) z ′ ( t ) ) ′ + q ( t ) f ( x ( t − σ ) ) = 0 , t ≥ t 0 , where z ( t ) = x ( t ) + p ( t ) x ( t − τ ...
Hui Li, Zhenlai Han, Shurong Sun
semanticscholar   +1 more source

On oscillatory solutions of differential inequalities [PDF]

open access: yesCzechoslovak Mathematical Journal, 1992
Oscillation properties are proved for systems of differential inequalities of the type \(\alpha_ iy_ i'y_{i+1}>0\) for \(y_{i+1}\neq 0\), \(y_ i'=0\) if \(y_{i+1}=0\), \(i=1,\dots,n\) in an interval \((a,b ...
openaire   +2 more sources

Asymptotic behavior of oscillatory solutions

open access: yesHiroshima Mathematical Journal, 1988
The aim in this paper is to study the asymptotic behavior of the oscillatory solutions of certain delay differential equations of the form \[ (1)\quad x'(t)+p(t)x(t-\tau)+q(t)x(t-\sigma)=0,\quad t\geq t_ 0 \] and of certain neutral equations of the form \[ (2)\quad (d/dt)[x(t)- px(t-\tau)]+q(t)x(t-\sigma)=0,\quad t\geq t_ 0.
Ladas, G., Sficas, Y. G.
openaire   +3 more sources

Necessary and sufficient conditions for nonoscillatory solutions of impulsive delay differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
Monotonicity of solutions is an important property in the investigation of oscillatory behaviors of differential equations. A number of papers provide some existence criteria for eventually positive increasing solutions.
Shao-Yuan Huang, Sui Sun Cheng
doaj   +1 more source

Analytical and numerical stability analysis of Soret-driven convection in a horizontal porous layer [PDF]

open access: yes, 2007
We present an analytical and numerical stability analysis of Soret-driven convection in a porous cavity saturated by a binary fluid. Both the mechanical equilibrium solution and the monocellular flow obtained for particular ranges of the physical ...
Mojtabi, Abdelkader   +5 more
core   +1 more source

Dynamics for Nonlinear Difference Equation xn+1=(αxn−k)/(β+γxn−lp)

open access: yesAdvances in Difference Equations, 2009
We mainly study the global behavior of the nonlinear difference equation in the title, that is, the global asymptotical stability of zero equilibrium, the existence of unbounded solutions, the existence of period two solutions, the existence of ...
Dongmei Chen, Xianyi Li, Yanqin Wang
doaj   +1 more source

Exact and approximate solutions of Riemann problems in non-linear elasticity [PDF]

open access: yes, 2009
Eulerian shock-capturing schemes have advantages for modelling problems involving complex non-linear wave structures and large deformations in solid media.
Barton, Philip Trevor   +3 more
core   +1 more source

Some New Oscillation Criteria for Second Order Neutral Differential Equations with Delayed Arguments

open access: yesMathematics, 2019
In this paper, we study the oscillation of second-order neutral differential equations with delayed arguments. Some new oscillatory criteria are obtained by a Riccati transformation. To illustrate the importance of the results, one example is also given.
Omar Bazighifan, Clemente Cesarano
doaj   +1 more source

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