Error estimates of the backward Euler–Maruyama method for multi-valued stochastic differential equations
Artikel i vetenskaplig tidskrift, 2021

In this paper we derive error estimates of the backward Euler–Maruyama method applied to multi-valued stochastic differential equations. An important example of such an equation is a stochastic gradient flow whose associated potential is not continuously differentiable but assumed to be convex. We show that the backward Euler–Maruyama method is well-defined and convergent of order at least 1/4 with respect to the root-mean-square norm. Our error analysis relies on techniques for deterministic problems developed in Nochetto et al. (Commun Pure Appl Math 53(5):525–589, 2000). We verify that our setting applies to an overdamped Langevin equation with a discontinuous gradient and to a spatially semi-discrete approximation of the stochastic p-Laplace equation.

Stochastic inclusion equation

Hölder continuous drift

Strong convergence

Backward Euler–Maruyama method

Discontinuous drift

Stochastic gradient flow

Multi-valued stochastic differential equation

Författare

Monika Eisenmann

Lunds universitet

Mihaly Kovacs

Pázmány Péter Katolikus Egyetem

Raphael Kruse

Martin-Luther-Universität Halle-Wittenberg

Stig Larsson

Chalmers, Matematiska vetenskaper, Tillämpad matematik och statistik

BIT (Copenhagen)

0006-3835 (ISSN)

Vol. In Press

Ämneskategorier

Beräkningsmatematik

Sannolikhetsteori och statistik

Matematisk analys

DOI

10.1007/s10543-021-00893-w

Mer information

Senast uppdaterat

2021-09-22