On uniqueness of solutions to viscous HJB equations with a subquadratic nonlinearity in the gradient
On uniqueness of solutions to viscous HJB equations with a subquadratic nonlinearity in the gradient
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梯度次二次非线性粘性HJB方程解的唯一性
DOI:
10.1080/03605302.2019.1645697
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发表时间:
2019
影响因子:
1.9
通讯作者:
Caffarelli, Luis
中科院分区:
文献类型:
--
作者:
Arapostathis, Ari;Biswas, Anup;Caffarelli, Luis
Uniqueness of positive solutions to viscous Hamilton–Jacobi–Bellman (HJB) equations of the form, withfa coercive function andλa constant, in the subquadratic case, that is,, appears to be an open problem. Barles and Meireles [Comm. Partial Differential Equations41 (2016)] show uniqueness in the case thatandfor some, essentially matching earlier results of Ichihara, who considered more general Hamiltonians but with better regularity forf. Without enforcing this assumption, to our knowledge, there are no results on uniqueness in the literature. In this short article, we show that the equation has a unique positive solution for any locally Lipschitz continuous, coercivefwhich satisfiesfor some positive constantκ. Since, this assumption imposes very mild restrictions on the growth of the potentialf. We also show that this solution fully characterizes optimality for the associated ergodic problem. Our method involves the study of an infinite dimensional linear program for elliptic equations for measures, and is very different from earlier approaches. It also applies to the larger class of Hamiltonians studied by Ichihara, and we show that it is well suited to provide optimality results for the associated ergodic control problem, even in a pathwise sense, and without resorting to the parabolic problem.
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影响因子:
1.7
作者:
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通讯作者:
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影响因子:
1.9
作者:
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DOI:
10.1137/140953903
发表时间:
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期刊:
SIAM J. Control. Optim.
影响因子:
--
作者:
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通讯作者:
Marco Cirant
DOI:
10.1016/j.matpur.2010.03.006
发表时间:
2009
期刊:
Journal de Mathématiques Pures et Appliquées
影响因子:
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作者:
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通讯作者:
Thierry Tabet Tchamba