Results 1 to 10 of about 5,203,105 (351)

Robust finite-time stability of uncertain neutral nonhomogeneous fractional-order systems with time-varying delays [PDF]

open access: yesTheoretical and Applied Mechanics, 2020
This article addresses the problem of finite-time stability for uncertain neutral nonhomogeneous fractional-order systems with time-varying delays where a stability test procedure is suggested.
Lazarević Mihailo P.   +3 more
doaj   +1 more source

Oscillation behavior for neutral delay differential equations of second-order

open access: yesMathematical Biosciences and Engineering, 2021
In this paper, new criteria for oscillation of neutral delay differential equations of second-order are presented. One objective of this study is to complement and extend some well-known related results in the literature.
Osama Moaaz   +5 more
doaj   +1 more source

Oscillation criteria for sublinear and superlinear first-order difference equations of neutral type with several delays

open access: yesAIMS Mathematics, 2022
The purpose of this paper is to investigate the oscillatory behaviour of a class of first-order sublinear and superlinear neutral difference equations.
Mohamed Altanji   +3 more
doaj   +1 more source

Asymptotic behavior of solutions of third-order neutral differential equations with discrete and distributed delay

open access: yesAIMS Mathematics, 2020
By refining the standard Riccati substitution technique, integral averaging technique and comparison principle, we obtain new oscillation and asymptotic behavior for a class of third-order neutral differential equations with discrete and distributed ...
M. Sathish Kumar, V. Ganesan
doaj   +1 more source

Positive Periodic Solution for Second-Order Nonlinear Differential Equations with Variable Coefficients and Mixed Delays

open access: yesEntropy, 2022
In this paper, we study two types of second-order nonlinear differential equations with variable coefficients and mixed delays. Based on Krasnoselskii’s fixed point theorem, the existence results of positive periodic solution are established.
Zejian Dai, Bo Du
doaj   +1 more source

Local environmental controls of Atlantic Forest tree community assembly on a coastal continental island in southeastern Brazil

open access: yesActa Botânica Brasílica, 2018
Tropical forests with high species diversity are commonly found in rugged montane areas. We investigated causes of local tropical forest tree community assembly on a continental island with heterogeneous terrain.
Felipe Cito Nettesheim   +3 more
doaj   +1 more source

Oscillation Theory for Non-Linear Neutral Delay Differential Equations of Third Order

open access: yesApplied Sciences, 2020
In this article, we study a class of non-linear neutral delay differential equations of third order. We first prove criteria for non-existence of non-Kneser solutions, and criteria for non-existence of Kneser solutions.
Osama Moaaz   +3 more
doaj   +1 more source

Noncanonical Neutral DDEs of Second-Order: New Sufficient Conditions for Oscillation

open access: yesMathematics, 2021
In this paper, new oscillation conditions for the 2nd-order noncanonical neutral differential equation (a0t((ut+a1tug0t)′)β)′+a2tuβg1t=0, where t≥t0, are established.
Awatif A. Hindi   +4 more
doaj   +1 more source

New Conditions for the Oscillation of Second-Order Differential Equations with Sublinear Neutral Terms

open access: yesMathematics, 2021
In continuous applications in electrodynamics, neural networks, quantum mechanics, electromagnetism, and the field of time symmetric, fluid dynamics, neutral differential equations appear when modeling many problems and phenomena.
Shyam Sundar Santra   +2 more
doaj   +1 more source

Stable Neutral Fermi Ball [PDF]

open access: yes, 2002
Fermi Ball is a kind of nontopological soliton with fermions trapped in its domain wall, and is suggested to arises from the spontaneous symmetry breaking of the approximate $Z_2$ symmetry in the early universe.
A. De Rújula   +17 more
core   +2 more sources

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