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We consider Galerkin finite element methods for semilinear stochastic partial differential equations (SPDEs) with multiplicative noise and Lipschitz continuous nonlinearities. We analyze the strong error of convergence for spatially…

数值分析 · 数学 2014-11-26 Raphael Kruse

We present a new approach to using neural networks to approximate the solutions of variational equations, based on the adaptive construction of a sequence of finite-dimensional subspaces whose basis functions are realizations of a sequence…

机器学习 · 计算机科学 2021-06-01 Mark Ainsworth , Justin Dong

Semilinear hyperbolic stochastic partial differential equations (SPDEs) find widespread applications in the natural and engineering sciences. However, the traditional Gaussian setting may prove too restrictive, as phenomena in mathematical…

数值分析 · 数学 2023-07-04 Andrea Barth , Andreas Stein

We establish a large deviation principle (LDP) for a class of stochastic porous media equations driven by L\'{e}vy-type noise on a $\sigma$-finite measure space $(E,\mathcal{B}(E),\mu)$, with the Laplacian replaced by a negative definite…

概率论 · 数学 2023-12-07 Weina Wu , Jianliang Zhai

This paper aims to present a local discontinuous Galerkin (LDG) method for solving backward stochastic partial differential equations (BSPDEs) with Neumann boundary conditions. We establish the $L^2$-stability and optimal error estimates of…

数值分析 · 数学 2024-09-18 Yixiang Dai , Yunzhang Li , Jing Zhang

The finite element method, finite difference method, finite volume method and spectral method have achieved great success in solving partial differential equations. However, the high accuracy of traditional numerical methods is at the cost…

数值分析 · 数学 2020-09-25 Jian Li , Jing Yue , Wen Zhang , Wansuo Duan

We consider the stochastic nonlinear Schroedinger equation driven by a multiplicative noise in a semiclassical regime, where the Plank constant is small. In this regime, the solution of the equation exhibits high-frequency oscillations. We…

数值分析 · 数学 2024-08-20 Lihai Ji , Zhihui Liu

Deep neural networks have been shown to provide accurate function approximations in high dimensions. However, fitting network parameters requires informative training data that are often challenging to collect in science and engineering…

数值分析 · 数学 2024-03-01 Joan Bruna , Benjamin Peherstorfer , Eric Vanden-Eijnden

One- and multi-dimensional stochastic Maxwell equations with additive noise are considered in this paper. It is known that such system can be written in the multi-symplectic structure, and the stochastic energy increases linearly in time.…

数值分析 · 数学 2022-05-04 Jiawei Sun , Chi-Wang Shu , Yulong Xing

We study a stochastic Landau-Lifshitz equation on a bounded interval and with finite dimensional noise. We first show that there exists a pathwise unique solution to this equation and that this solution enjoys the maximal regularity…

概率论 · 数学 2016-09-15 Z. Brzeźniak , B. Goldys , T. Jegaraj

Consider stochastic partial differential equations (SPDEs) with fully local monotone coefficients in a Gelfand triple $V\subseteq H\subseteq V^*$ $$ \left\{ \begin{align} &dX_t=A(t,X_t)dt+B(t,X_t)dW_t,\ t\in (0,T]\\\\& X_0=x\in H,…

概率论 · 数学 2024-01-11 Tianyi Pan , Shijie Shang , Jianliang Zhai , Tusheng Zhang

We study the large deviation behavior of a system of diffusing particles with a mean field interaction, described through a collection of stochastic differential equations, in which each particle is driven by a vanishing independent…

概率论 · 数学 2021-08-10 Amarjit Budhiraja , Michael Conroy

We consider the damped nonlinear wave (NLW) equation driven by a spatially regular white noise. Assuming that the noise is non-degenerate in all Fourier modes, we establish a large deviations principle (LDP) for the occupation measures of…

偏微分方程分析 · 数学 2015-05-15 Davit Martirosyan , Vahagn Nersesyan

We establish a general theory of optimal strong error estimation for numerical approximations of a second-order parabolic stochastic partial differential equation with monotone drift driven by a multiplicative infinite-dimensional Wiener…

数值分析 · 数学 2022-03-02 Zhihui Liu , Zhonghua Qiao

The large deviations analysis of solutions to stochastic differential equations and related processes is often based on approximation. The construction and justification of the approximations can be onerous, especially in the case where the…

概率论 · 数学 2008-08-28 Amarjit Budhiraja , Paul Dupuis , Vasileios Maroulas

In many applications of practical interest, solutions of partial differential equation models arise as critical points of an underlying (energy) functional. If such solutions are saddle points, rather than being maxima or minima, then the…

数值分析 · 数学 2020-09-07 Pascal Heid , Thomas P. Wihler

We study a class of stochastic semilinear damped wave equations driven by additive Wiener noise. Owing to the damping term, under appropriate conditions on the nonlinearity, the solution admits a unique invariant distribution. We apply…

数值分析 · 数学 2023-06-27 Ziyi Lei , Charles-Edouard Bréhier , Siqing Gan

We establish a Freidlin-Wentzell type large deviation principle (LDP) for a class of stochastic partial differential equations with locally monotone coefficients driven by L\'evy noise. Our results essentially improve a recent work on this…

概率论 · 数学 2024-01-23 Weina Wu , Jianliang Zhai , Jiahui Zhu

We consider a stochastic Cahn-Hilliard partial differential equation driven by a space-time white noise. We prove the Large Deviations Principle (LDP) for the law of the solutions in the H\"older norm. We use the weak convergence approach…

概率论 · 数学 2017-08-29 Lahcen Boulanba , Mohamed Mellouk

In this paper, we prove the large deviation principle (LDP) for stochastic differential equations driven by stochastic integrals in one dimension. The result can be proved with a minimal use of rough path theory, and this implies the LDP…

概率论 · 数学 2025-01-03 Ryoji Takano