Approximate viscosity solutions of path-dependent PDEs and Dupire's vertical differentiability
Analysis of PDEs
2021-09-09 v2 Probability
Abstract
We introduce a notion of approximate viscosity solution for a class of nonlinear path-dependent PDEs (PPDEs), including the Hamilton-Jacobi-Bellman type equations. Existence, comparaison and stability results are established under fairly general conditions. It is also consistent with smooth solutions when the dimension is less or equal to two, or the non-linearity is concave in the second order space derivative. We finally investigate the regularity (in the sense of Dupire) of the solution to the PPDE.
Cite
@article{arxiv.2107.01956,
title = {Approximate viscosity solutions of path-dependent PDEs and Dupire's vertical differentiability},
author = {Bruno Bouchard and Grégoire Loeper and Xiaolu Tan},
journal= {arXiv preprint arXiv:2107.01956},
year = {2021}
}