Results 61 to 70 of about 135 (134)

A note on intermittency for the fractional heat equation [PDF]

open access: yes, 2013
The goal of the present note is to study intermittency properties for the solution to the fractional heat equation with initial condition bounded above and below, where β ∈ (0, 2] and the noise W behaves in time like a fractional Brownian motion of index
Raluca M Balan, Daniel Conus
core  

Mixing via controllability for randomly forced nonlinear dissipative PDEs [PDF]

open access: yes, 2019
We continue our study of the problem of mixing for a class of PDEs with very degenerate noise. As we established earlier, the uniqueness of stationary measure and its exponential stability in the dual-Lipschitz metric holds under the hypothesis that the ...
Vahagn Nersesyan   +5 more
core   +2 more sources

Measure Attractors For Stochastic Navier-Stokes Equations [PDF]

open access: yes, 1998
: We show existence of measure attractors for 2-D stochastic Navier-Stokes equations with general multiplicative noise. Keywords: Stochastic Navier--Stokes equations, measure attractors AMS subject classification: Primary: 35Q30, 60H15, 60G60; Secondary:
Marek Capinski, Nigel J. Cutland
core  

Approximate Solvability of Forward-Backward Stochastic Differential Equations [PDF]

open access: yes, 2007
. The solvability of forward-backward stochastic differential equations (FBSDE, for short) has been studied extensively in recent years. To guarantee the existence and uniqueness of adapted solutions, many different conditions, some are quite restrictive,
Jin Ma, Jiongmin Yong
core  

A Functional Limit Theorem for Waves Reflected by a Random Medium [PDF]

open access: yes, 1996
We introduce a class of distribution-valued stochastic processes that arise in the study of pulse reflection from random media and we analyze their asymptotic properties when they are scaled in a natural way.
George Papanicolaou, Sophie Weinryb
core  

Diffusion approximation for hyperbolic stochastic differential equations [PDF]

open access: yes
In this paper we show an approximation diffusion theorem for a stochastic integral equation on the plane driven by a two-parameter Wiener process. This result is obtained by means of the martingale problem approach for two-parameter processes.60H15 60G60
Nualart, David, Florit, Carme
core  

Inverse problems and uncertainty quantification [PDF]

open access: yes, 2013
In a Bayesian setting, inverse problems and uncertainty quantification (UQ)— the propagation of uncertainty through a computational (forward) model—are strongly connected. In the form of conditional expectation the Bayesian update becomes computationally
Matthies, Hermann G.   +1 more
core  

Strong uniqueness for SDEs in Hilbert spaces with non-regular drift [PDF]

open access: yes, 2020
We prove pathwise uniqueness for a class of stochastic differential equations (SDE) on a Hilbert space with cylindrical Wiener noise, whose non-linear drift parts are sums of the subdifferential of a convex function and a bounded part. This generalizes a
G Da Prato   +3 more
core  

Computation of the Response Surface in the Tensor Train data format [PDF]

open access: yes, 2014
We apply the Tensor Train (TT) approximation to construct the Polynomial Chaos Expansion (PCE) of a random field, and solve the stochastic elliptic diffusion PDE with the stochastic Galerkin discretization.
Matthies, Hermann G.   +3 more
core  

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