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This paper presents a general approach to linear stochastic processes driven by various random noises. Mathematically, such processes are described by linear stochastic differential equations of arbitrary order (the simplest non-trivial…

凝聚态物理 · 物理学 2009-10-28 Alon Drory

We study the notions of mild solution and generalized solution to a linear stochastic partial differential equation driven by a pure jump symmetric L\'evy white noise. We identify conditions for existence for these two kinds of solutions,…

概率论 · 数学 2018-09-27 Robert C. Dalang , Thomas Humeau

Numerical algorithms for the integration of stochastic differential equations in the presence of white noise are introduced and compared. Algorithms for the integration of stochastic correlated forces are also briefly reviewed. Finally, a…

统计力学 · 物理学 2008-02-03 Riccardo Mannella

We consider linear and nonlinear hyperbolic SPDEs with mixed derivatives with additive space-time Gaussian white noise of the form $Y_{xt}=F(Y) + \sigma W_{xt}.$ Such equations, which transform to linear and nonlinear wave equations,…

数值分析 · 数学 2015-08-10 Henry C. Tuckwell

For a class of non-linear stochastic heat equations driven by $\alpha$-stable white noises for $\alpha\in(1,2)$ with Lipschitz coefficients, we first show the existence and pathwise uniqueness of $L^p$-valued c\`{a}dl\`{a}g solutions to…

概率论 · 数学 2024-04-02 Yongjin Wang , Chengxin Yan , Xiaowen Zhou

Semilinear stochastic evolution equations with multiplicative L\'evy noise and monotone nonlinear drift are considered. Unlike other similar works, we do not impose coercivity conditions on coefficients. We establish the continuous…

概率论 · 数学 2014-06-17 Erfan Salavati , Bijan Z. Zangeneh

We devise an explicit method to integrate $\alpha$-stable stochastic differential equations (SDEs) with non-Lipschitz coefficients. To mitigate against numerical instabilities caused by unbounded increments of the L\'evy noise, we use a…

动力系统 · 数学 2021-06-04 Georg A. Gottwald , Ian Melbourne

We develop a class of averaging lemmas for stochastic kinetic equations. The velocity is multiplied by a white noise which produces a remarkable change in time scale. Compared to the deterministic case and as far as we work in $L^2$, the…

偏微分方程分析 · 数学 2012-04-03 Pierre-Louis Lions , Benoit Perthame , Panagiotis E. Souganidis

A parameter estimation problem is considered for a one-dimensional stochastic wave equation driven by additive space-time Gaussian white noise. The estimator is of spectral type and utilizes a finite number of the spatial Fourier…

概率论 · 数学 2008-10-02 W. Liu , S. V. Lototsky

Numerical approximation of a stochastic partial integro-differential equation driven by a space- time white noise is studied by truncating a series representation of the noise, with finite element method for spatial discretization and…

数值分析 · 数学 2017-11-07 Max Gunzburger , Buyang Li , Jilu Wang

In this paper, we study a class of stochastic differential equations with additive noise that contains a fractional Brownian motion (fBM) and a Poisson point process of class (QL). The differential equation of this kind is motivated by the…

概率论 · 数学 2015-04-14 Lihua Bai , Jin Ma

We consider the Navier-Stokes equations in vorticity form in $\mathbb{R}^2$ with a white noise forcing term of multiplicative type, whose spatial covariance is not regular enough to apply the It\^o calculus in $L^q$ spaces, $1<q<\infty$. We…

概率论 · 数学 2018-03-06 Benedetta Ferrario , Margherita Zanella

In this paper we study a large class of nonlinear stochastic wave equations that arise in laser generation models and models for propagation in random media in a unified mathematical framework. Continuous and pulse-wave propagation models,…

偏微分方程分析 · 数学 2024-12-24 Sivaguru S. Sritharan , Saba Mudaliar

In this paper, we study the stochastic partial differential equation with multiplicative noise $\frac{\partial u}{\partial t} =\mathcal L u+u\dot W$, where $\mathcal L$ is the generator of a symmetric L\'evy process $X$ and $\dot W$ is a…

概率论 · 数学 2016-01-29 Jian Song

Stochastic averaging problems with Gaussian forcing have been studied thoroughly for many years, but far less attention has been paid to problems where the stochastic forcing has infinite variance, such as an {\alpha}-stable noise forcing.…

动力系统 · 数学 2017-05-24 William F. Thompson , Rachel A. Kuske , Adam. H. Monahan

We consider a stochastic partial differential equation with piecewise constant coefficients driven by a multiplicative space-time white noise. The existence and uniqueness of the mild solution in Walsh sense is established. We mainly study…

概率论 · 数学 2025-11-18 Yongkang Li , Huisheng Shu , Litan Yan

In this paper, we establish the existence and uniqueness of invariant measures for a class of semilinear stochastic partial differential equations driven by multiplicative noise on a bounded domain. The main results can be applied to SPDEs…

概率论 · 数学 2018-12-12 Zhao Dong , Rangrang Zhang

This paper studies the nonlinear stochastic partial differential equation of fractional orders both in space and time variables: \[ \left(\partial^\beta+\frac{\nu}{2}(-\Delta)^{\alpha/2}\right)u(t,x) =…

概率论 · 数学 2015-09-28 Le Chen , Yaozhong Hu , David Nualart

We present a Bayesian non-parametric way of inferring stochastic differential equations for both regression tasks and continuous-time dynamical modelling. The work has high emphasis on the stochastic part of the differential equation, also…

机器学习 · 统计学 2020-06-29 Martin Jørgensen , Marc Peter Deisenroth , Hugh Salimbeni

The existence and uniqueness of measure-valued solutions to stochastic nonlinear, non-local Fokker-Planck equations is proven. This type of stochastic PDE is shown to arise in the mean field limit of weakly interacting diffusions with…

概率论 · 数学 2021-03-30 Michele Coghi , Benjamin Gess