Existence Theory for a Time-Dependent Mean Field Games Model of Household Wealth
Existence Theory for a Time-Dependent Mean Field Games Model of Household Wealth
复制标题
家庭财富随时间平均场博弈模型的存在理论
DOI:
10.1007/s00245-019-09619-5
复制
发表时间:
2019
影响因子:
1.8
通讯作者:
Ambrose, David M.
中科院分区:
文献类型:
--
作者:
Ambrose, David M.
We study a nonlinear system of partial differential equations arising in macroeconomics which utilizes a mean field approximation. This system together with the corresponding data, subject to two moment constraints, is a model for debt and wealth across a large number of similar households, and was introduced in a recent paper of Achdou et al. (Philos Trans R Soc Lond Ser A 372(2028):20130397, 2014). We introduce a relaxation of their problem, generalizing one of the moment constraints; any solution of the original model is a solution of this relaxed problem. We prove existence and uniqueness of strong solutions to the relaxed problem, under the assumption that the time horizon is small. Since these solutions are unique and since solutions of the original problem are also solutions of the relaxed problem, we conclude that if the original problem does have solutions, then such solutions must be the solutions we prove to exist. Furthermore, for some data and for sufficiently small time horizons, we are able to show that solutions of the relaxed problem are in fact not solutions of the original problem. In this way we demonstrate nonexistence of solutions for the original problem in certain cases.
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DOI:
--
发表时间:
2014
期刊:
Dyn. Games Appl.
影响因子:
--
作者:
A. Porretta
通讯作者:
A. Porretta
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
D. Ambrose
通讯作者:
D. Ambrose
影响因子:
1.9
作者:
HUGGETT, M
通讯作者:
HUGGETT, M
影响因子:
2
作者:
Ambrose, DM
通讯作者:
Ambrose, DM
DOI:
10.1051/cocv/2015029
发表时间:
2013
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
D. Gomes;Edgard A. Pimentel;H'ector S'anchez
通讯作者:
H'ector S'anchez