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We study the problem of parametric estimation for continuously observed stochastic processes driven by additive small fractional Brownian motion with Hurst index 0<H<1/2 and 1/2<H<1. Under some assumptions on the drift coefficient, we…

统计理论 · 数学 2022-01-04 Shohei Nakajima , Yasutaka Shimizu

In this paper we shall establish an existence and uniqueness result for solutions of multidimensional, time dependent, stochastic differential equations driven simultaneously by a multidimensional fractional Brownian motion with Hurst…

概率论 · 数学 2015-11-03 José Luís da Silva , Mohamed Erraoui , El Hassan Essaky

We establish diffusion and fractional Brownian motion approximations for motions in a Markovian Gaussian random field with a nonzero mean.

概率论 · 数学 2007-05-23 Albert Fannjiang , Tomasz Komorowski

In this article, we consider fractional stochastic wave equations on $\mathbb R$ driven by a multiplicative Gaussian noise which is white/colored in time and has the covariance of a fractional Brownian motion with Hurst parameter…

概率论 · 数学 2019-04-23 Jian Song , Xiaoming Song , Fangjun Xu

In this article we study effects that small perturbations in the noise have to the solution of differential equations driven by H\"older continuous functions of order $H>\frac12$. As an application, we consider stochastic differential…

概率论 · 数学 2020-05-11 Lauri Viitasaari , Caibin Zeng

The goal of this paper is to define and study a notion of fractional Brownian motion on a Lie group. We define it as at the solution of a stochastic differential equation driven by a linear fractional Brownian motion. We show that this…

概率论 · 数学 2007-05-23 F. Baudoin , L. Coutin

By constructing a new family of successful couplings, the Driver-type integration by parts formula is established for the operator associated with stochastic differential equation driven by fractional Brownian motion. As applications, shift…

概率论 · 数学 2014-07-29 Xiliang Fan

We find an explicit expression for the cross-covariance between stochastic integral processes with respect to a $d$-dimensional fractional Brownian motion (fBm) $B_t$ with Hurst parameter $H>1/2$, where the integrands are vector fields…

概率论 · 数学 2016-12-16 Yohaï Maayan , Eddy Mayer-Wolf

We report on generic relations between fractional flow and pressure in steady two-phase flow in porous media. The main result is a differential equation for fractional flow as a function of phase saturation. We infer this result from two…

凝聚态物理 · 物理学 2007-05-23 Henning Arendt Knudsen , Alex Hansen

A variational representation for functionals of G-Brownian motion is established by a finite-dimensional approximate technique. As an application of the variational representation, we obtain a large deviation principle for stochastic flows…

概率论 · 数学 2012-04-23 Fuqing Gao

Consider ``stochastic differential equations" driven by fractional Brownian motion with Hurst parameter H (1/4 <H< 1). Their solutions are sometimes called fractional diffusion processes. The main purpose of this paper is conditioning these…

概率论 · 数学 2025-12-02 Yuzuru Inahama

We study one-dimensional stochastic differential equations of form $dX_t = \sigma(X_t)dY_t$, where $Y$ is a suitable H\"older continuous driver such as the fractional Brownian motion $B^H$ with $H>\frac12$. The innovative aspect of the…

概率论 · 数学 2019-08-09 Soledad Torres , Lauri Viitasaari

We consider a semi-linear advection equation driven by a highly-oscillatory space-time Gaussian random field, with the randomness affecting both the drift and the nonlinearity. In the linear setting, classical results show that the…

概率论 · 数学 2018-07-04 Yu Gu , Tomasz Komorowski , Lenya Ryzhik

We study small noise large deviation asymptotics for stochastic differential equations with a multiplicative noise given as a fractional Brownian motion $B^H$ with Hurst parameter $H>\frac12$. The solutions of the stochastic differential…

概率论 · 数学 2020-06-18 Amarjit Budhiraja , Xiaoming Song

This paper studies the existence and uniqueness of solution of It\^o type stochastic differential equation $dx(t)=b(t, x(t), \om)dt+\si(t,x(t), \om) d B(t)$, where $B(t)$ is a fractional Brownian motion of Hurst parameter $H>1/2$ and…

概率论 · 数学 2016-12-20 Yaozhong Hu

In this paper, we consider the extended stochastic Navier-Stokes equations with Caputo derivative driven by fractional Brownian motion. We firstly derive the pathwise spatial and temporal regularity of the generalized Ornstein-Uhlenbeck…

数值分析 · 数学 2017-09-18 Guang-an Zou , Guangying Lv , Jiang-Lun Wu

In this paper we show that solutions of stochastic partial differential equations driven by Brownian motion can be approximated by stochastic partial differential equations forced by pure jump noise/random kicks. Applications to stochastic…

概率论 · 数学 2014-01-31 Giulia Di Nunno , Tusheng Zhang

We construct a family of SDEs whose solutions select a reflected Brownian flow as well as a stochastic damped transport process (W\_t). The latter gives a representation for the solutions to the heat equation for differential 1-forms with…

概率论 · 数学 2017-02-01 Marc Arnaudon , Xue-Mei Li

We show that a stochastic flow which is generated by a stochastic differential equation on $\R^d$ with bounded volatility has a random attractor provided that the drift component in the direction towards the origin is larger than a certain…

概率论 · 数学 2009-09-22 Georgi Dimitroff , Michael Scheutzow

We analyze here different forms of fractional relaxation equations of order {\nu}\in(0,1) and we derive their solutions both in analytical and in probabilistic forms. In particular we show that these solutions can be expressed as crossing…

概率论 · 数学 2011-07-14 Luisa Beghin