Extragradient methods for mean field games of controls and mean field type FBSDEs

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1. Verfasser: Meynard, Charles
Format: Preprint
Veröffentlicht: 2026
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author Meynard, Charles
author_facet Meynard, Charles
contents In this paper we present a numerical scheme to solve coupled mean field forward-backward stochastic differential equations driven by monotone vector fields. This is based on an adaptation of so called extragradient methods by characterizing solutions as zeros of monotone variational inequalities in a Hilbert space. We first introduce the procedure in the context of mean field games of controls and highlight its connection to the fictitious play. Under sufficiently strong monotonicity assumptions, we demonstrate that the sequence of approximate solutions converges exponentially fast. Then we extend the method and main results to general forward backward systems of stochastic differential equations that do not necessarily stem from optimal control.
format Preprint
id arxiv_https___arxiv_org_abs_2602_14621
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Extragradient methods for mean field games of controls and mean field type FBSDEs
Meynard, Charles
Optimization and Control
In this paper we present a numerical scheme to solve coupled mean field forward-backward stochastic differential equations driven by monotone vector fields. This is based on an adaptation of so called extragradient methods by characterizing solutions as zeros of monotone variational inequalities in a Hilbert space. We first introduce the procedure in the context of mean field games of controls and highlight its connection to the fictitious play. Under sufficiently strong monotonicity assumptions, we demonstrate that the sequence of approximate solutions converges exponentially fast. Then we extend the method and main results to general forward backward systems of stochastic differential equations that do not necessarily stem from optimal control.
title Extragradient methods for mean field games of controls and mean field type FBSDEs
topic Optimization and Control
url https://arxiv.org/abs/2602.14621