نتایج جستجو برای: random differential equations

تعداد نتایج: 737064  

Journal: :Stochastics and Partial Differential Equations Analysis and Computations 2016

Journal: :Siam Journal on Applied Dynamical Systems 2021

Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 15 January 2021Accepted: 02 August 2021Published online: 04 November 2021Keywordsuncertainty propagation, Mellin transform, polynomial chaos expansion, method moments, Gaussian mixture models, unscented transformationAMS Subject Headings34F10, 34C20, 37H10, 60H35, 41A58, ...

Journal: :Discrete and Continuous Dynamical Systems 2021

We develop a theory of mean-square random invariant manifolds for dynamical systems generated by stochastic differential equations. This is applicable to partial equations driven nonlinear noise. The existence unstable proved the Lyapunov-Perron method based on backward equation involving conditional expectation with respect filtration. stable sets also established but remains open.

2012
ANNIKA LANG

In this paper parabolic random partial differential equations and parabolic stochastic partial differential equations driven by a Wiener process are considered. A deterministic, tensorized evolution equation for the second moment and the covariance of the solutions of the parabolic stochastic partial differential equations is derived. Well-posedness of a space-time weak variational formulation ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان 1389

in this thesis, ‎‎using‎‎ ‎concept‎s‎ ‎of‎ ‎wavelet‎s‎ ‎theory ‎‎‎som‎e‎ ‎methods‎‎ ‎of‎ ‎th‎e ‎solving‎‎ ‎optimal‎‎ ‎‎con‎tr‎ol‎ problems ‎(ocps)‎‎. ‎g‎overned by time-delay systems is investigated. ‎th‎is‎ thesis contains ‎tw‎o parts. ‎‎first, the method of obtaining ‎o‎f ‎the‎ ‎‎ocps‎ in time delay systems by linear legendre multiwavelets is ‎ ‎presented‎.‎‎‎‎ the main advantage of the meth...

Journal: :iranian journal of optimization 0
j. biazar department of mathematics, faculty of sciences, university of guilan. m. eslami department of mathematics, faculty of sciences, university of guilan.

differential transform method has been applied to solve many functional equations so far. in this article, we have used this method to solve wave-like equations. differential transform method is capable of reducing the size of computational work. exact solutions can also be achieved by the known forms of the series solutions. some examples are prepared to show theefficiency and simplicity of th...

Journal: :journal of mathematical modeling 0
mehran namjoo school of mathematical sciences, vali-e-asr university of rafsanjan, rafsanjan, iran ali mohebbian school of mathematical sciences, vali-e-asr university of rafsanjan, rafsanjan, iran

in this paper, a high-order and conditionally stable stochastic difference scheme is proposed for the numerical solution of $rm ithat{o}$ stochastic advection diffusion equation with one dimensional white noise process. we applied a finite difference approximation of fourth-order for discretizing space spatial derivative of this equation. the main properties of deterministic difference schemes,...

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