Results 1 to 10 of about 7,625 (113)

Introduction to discrete functional analysis techniques for the numerical study of diffusion equations with irregular data [PDF]

open access: yes, 2015
We give an introduction to discrete functional analysis techniques for stationary and transient diffusion equations. We show how these techniques are used to establish the convergence of various numerical schemes without assuming non-physical regularity ...
Droniou, Jerome
core   +3 more sources

Exponentially accurate Hamiltonian embeddings of symplectic A-stable Runge--Kutta methods for Hamiltonian semilinear evolution equations [PDF]

open access: yes, 2015
We prove that a class of A-stable symplectic Runge--Kutta time semidiscretizations (including the Gauss--Legendre methods) applied to a class of semilinear Hamiltonian PDEs which are well-posed on spaces of analytic functions with analytic initial data ...
Oliver, Marcel, Wulff, Claudia
core   +2 more sources

Rigorous Numerical Verification of Uniqueness and Smoothness in a Surface Growth Model [PDF]

open access: yes, 2015
Based on numerical data and a-posteriori analysis we verify rigorously the uniqueness and smoothness of global solutions to a scalar surface growth model with striking similarities to the 3D Navier--Stokes equations, for certain initial data for which ...
Blömker, Dirk   +2 more
core   +2 more sources

Stochastic PDEs with multiscale structure [PDF]

open access: yes, 2012
We study the spatial homogenisation of parabolic linear stochastic PDEs exhibiting a two-scale structure both at the level of the linear operator and at the level of the Gaussian driving noise.
Hairer, Martin, Kelly, David
core   +4 more sources

Error analysis of a space-time finite element method for solving PDEs on evolving surfaces [PDF]

open access: yes, 2013
In this paper we present an error analysis of an Eulerian finite element method for solving parabolic partial differential equations posed on evolving hypersurfaces in $\mathbb{R}^d$, $d=2,3$.
Olshanskii, Maxim A., Reusken, Arnold
core   +2 more sources

A forward--backward stochastic algorithm for quasi-linear PDEs [PDF]

open access: yes, 2006
We propose a time-space discretization scheme for quasi-linear parabolic PDEs. The algorithm relies on the theory of fully coupled forward--backward SDEs, which provides an efficient probabilistic representation of this type of equation.
Delarue, François, Menozzi, Stéphane
core   +6 more sources

Multilevel Quasi-Monte Carlo Methods for Lognormal Diffusion Problems [PDF]

open access: yes, 2016
In this paper we present a rigorous cost and error analysis of a multilevel estimator based on randomly shifted Quasi-Monte Carlo (QMC) lattice rules for lognormal diffusion problems. These problems are motivated by uncertainty quantification problems in
Kuo, Frances Y.   +4 more
core   +3 more sources

Solving linear parabolic rough partial differential equations [PDF]

open access: yes, 2018
We study linear rough partial differential equations in the setting of [Friz and Hairer, Springer, 2014, Chapter 12]. More precisely, we consider a linear parabolic partial differential equation driven by a deterministic rough path $\mathbf{W}$ of H ...
Bayer, Christian   +4 more
core   +3 more sources

On ``hyperboloidal'' Cauchy data for vacuum Einstein equations and obstructions to smoothness of ``null infinity'' [PDF]

open access: yes, 1993
Various works have suggested that the Bondi--Sachs--Penrose decay conditions on the gravitational field at null infinity are not generally representative of asymptotically flat space--times.
A. Trautman   +16 more
core   +2 more sources

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