Results 21 to 30 of about 2,358,486 (249)

Oscillation criteria for delay equations [PDF]

open access: yesProceedings of the American Mathematical Society, 2000
Summary: This paper is concerned with the oscillatory behavior of first-order delay differential equations of the form \[ x'(t)+p(t)x({\tau}(t))=0, \quad t\geq t_{0},\tag{1} \] with \(p, {\tau} \in C([t_{0}, \infty), \mathbb{R}^+)\), \(\mathbb{R}^+=[0, \infty), \tau(t)\) is nondecreasing, \(\tau(t)
Kon, M.   +2 more
openaire   +3 more sources

Oscillation Criteria for the Sublinear Schrodinger Equation [PDF]

open access: yesProceedings of the American Mathematical Society, 1982
In this paper, we propose an oscillation theorem to the sublinear Emden-Fowler equation Δ ...
openaire   +2 more sources

Some comparison criteria in oscillation theory [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1984
AbstractThe purpose of this paper is to establish comparison criteria, by which the oscillatory and asymptotic behavior of linear retarded differential equations of arbitrary order is inherited from the oscillation of an associated second order linear ordinary differential equation.
openaire   +3 more sources

Oscillation criteria for second order nonlinear differential equations [PDF]

open access: yes, 2006
summary:Our aim in this paper is to present criteria for oscillation of the nonlinear differential equation \[ u^{\prime \prime }(t)+p(t)f\big (u(g(t))\big )=0\,.
Baculíková, Blanka
core   +1 more source

Oscillation Criteria for Second-order Dynamic Equations on Time Scales [PDF]

open access: yes, 2014
Erbe\u27s and Hassan\u27s contributions regarding oscillation criteria are interesting in the development of oscillation theory of dynamic equations on time scales. The objective of this paper is to amend these results. © 2014 Elsevier Ltd.
Bohner, Martin   +3 more
core   +1 more source

Oscillation Criteria in Higher Order Neutral Equations

open access: yesJournal of Mathematical Analysis and Applications, 1994
The paper deals with oscillatory criteria for the solutions of a scalar higher order neutral equation of mixed type (with delayed and advanced arguments), with constant coefficients. As a main result, the classical characterization of oscillations by the characteristic equation is extended to such equations.
Bilchev, S. J.   +2 more
openaire   +2 more sources

Oscillation criteria for third-order functional half-linear dynamic equations

open access: yesAdvances in Difference Equations, 2017
In this paper, we study the third-order functional dynamic equation { r 2 ( t ) ϕ α 2 ( [ r 1 ( t ) ϕ α 1 ( x Δ ( t ) ) ] Δ ) } Δ + q ( t ) ϕ α ( x ( g ( t ) ) ) = 0 , $$ \bigl\{ r_{2}(t)\phi_{\alpha_{2}} \bigl( \bigl[ r_{1}(t) \phi _{\alpha _{1}} \bigl(
Taher S Hassan   +2 more
doaj   +1 more source

Oscillation criteria of certain fractional partial differential equations

open access: yesAdvances in Difference Equations, 2019
In this article, we regard the generalized Riccati transformation and Riemann–Liouville fractional derivatives as the principal instrument. In the proof, we take advantage of the fractional derivatives technique with the addition of interval segmentation
Di Xu, Fanwei Meng
doaj   +1 more source

Effective Prüfer angles and relative oscillation criteria

open access: yesJournal of Differential Equations, 2008
22 ...
Krüger, Helge, Teschl, Gerald
openaire   +4 more sources

New Monotonic Properties of Positive Solutions of Higher-Order Delay Differential Equations and Their Applications

open access: yesMathematics, 2022
In this work, new criteria were established for testing the oscillatory behavior of solutions of a class of even-order delay differential equations. We follow an approach that depends on obtaining new monotonic properties for the decreasing positive ...
Ali Muhib   +5 more
doaj   +1 more source

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