Results 21 to 30 of about 5,252,215 (279)

On the almost sure running maxima of solutions of affine stochastic functional differential equations [PDF]

open access: yes, 2010
This paper studies the large fluctuations of solutions of scalar and finite-dimensional affine stochastic functional differential equations with finite memory as well as related nonlinear equations.
Wu, H., Appleby, John A.D., Mao, Xuerong
core   +4 more sources

Note on oscillation conditions for first-order delay differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We consider explicit conditions for all solutions to linear scalar differential equations with several variable delays to be oscillatory. The considered conditions have the form of inequalities bounding the upper limit of the sum of integrals of ...
Kirill Chudinov
doaj   +1 more source

Asymptotic behaviours of stochastic differential delay equations [PDF]

open access: yes, 2006
Most of the existing results on stochastic stability use a single Lyapunov function, but we shall instead use multiple Lyapunov functions in this paper.
Shen, Yi, Mao, Xuerong
core   +4 more sources

On oscillation of solutions of differential equations with distributed delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
We obtain sufficient conditions for oscillation of solutions to a linear differential equation with distributed delay. We construct examples showing that constants in the conditions are unimprovable.
Vera Malygina, Tatyana Sabatulina
doaj   +1 more source

On a Class of Functional Differential Equations with Symmetries [PDF]

open access: yesSymmetry, 2019
It is shown that a class of symmetric solutions of scalar non-linear functional differential equations can be investigated by using the theory of boundary value problems. We reduce the question to a two-point boundary value problem on a bounded interval and present several conditions ensuring the existence of a unique symmetric solution.
Nataliya Dilna   +2 more
openaire   +3 more sources

On positiveness of the fundamental solution for a linear autonomous differential equation with distributed delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We present necessary and sufficient conditions for the nonoscillation of the fundamental solutions to a linear autonomous differential equation with distributed delay. The conditions are proposed in both the analytic and geometric forms.
Tatyana Sabatulina, Vera Malygina
doaj   +1 more source

Functional Differential Equations and Inequalities [PDF]

open access: yesProceedings of the National Academy of Sciences, 1936
Let us first try to find the minimum value of the integral ∫02π[f’(x)+mf(x + π)+e(x)]^2dx where f(x) is a uniform function of period 2π which is integrable and such that ∫02π[f(x)]^2dx=1.
openaire   +3 more sources

Periodic solutions of measure functional differential equations

open access: yes, 2022
In this article, we study the existence of periodic solutions for measure functional differential equations of the form x(t)=x(0)+∫0tf(s,xs)ds+∫0tg(s,xs)du(s), defined for every t∈R, under suitable assumptions on f,g and u, where the integrals on the ...
Afonso, S. M. [UNESP]   +2 more
core   +1 more source

RADIATIVE DAMPING AND FUNCTIONAL DIFFERENTIAL EQUATIONS [PDF]

open access: yesModern Physics Letters A, 2011
We propose a general technique to solve the classical many-body problem with radiative damping. We modify the short-distance structure of Maxwell electrodynamics. This allows us to avoid runaway solutions as if we had a covariant model of extended particles.
Raju, Suvrat, Raju, C. K.
openaire   +3 more sources

About a Problem for Loaded Parabolic-Hyperbolic Type Equation with Fractional Derivatives

open access: yesInternational Journal of Differential Equations, 2016
An existence and uniqueness of solution of local boundary value problem with discontinuous matching condition for the loaded parabolic-hyperbolic equation involving the Caputo fractional derivative and Riemann-Liouville integrals have been investigated ...
Kishin B. Sadarangani   +1 more
doaj   +1 more source

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