Results 11 to 20 of about 30,034 (265)

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

Self-Sustained Turn-Off Oscillation of SiC MOSFETs: Origin, Instability Analysis, and Prevention

open access: yesEnergies, 2019
This paper presents a comprehensive investigation on the self-sustained oscillation of silicon carbide (SiC) MOSFETs. At first, based on the double pulse switching test, it is identified that the self-sustained oscillation of SiC MOSFETs can be triggered
Peng Xue   +4 more
doaj   +1 more source

Oscillation criteria for linear difference equations with several variable delays [PDF]

open access: yesOpuscula Mathematica, 2021
We obtain new sufficient criteria for the oscillation of all solutions of linear delay difference equations with several (variable) finite delays. Our results relax numerous well-known limes inferior-type oscillation criteria from the literature by ...
Vasileios Benekas   +3 more
doaj   +1 more source

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

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

New Oscillation Theorems for Second-Order Differential Equations with Canonical and Non-Canonical Operator via Riccati Transformation

open access: yesMathematics, 2021
In this work, we prove some new oscillation theorems for second-order neutral delay differential equations of the form (a(ξ)((v(ξ)+b(ξ)v(ϑ(ξ)))′))′+c(ξ)G1(v(κ(ξ)))+d(ξ)G2(v(ς(ξ)))=0 under canonical and non-canonical operators, that is, ∫ξ0∞dξa(ξ)=∞ and ...
Shyam Sundar Santra   +4 more
doaj   +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

Effective Prüfer angles and relative oscillation criteria

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

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

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