On backward stochastic differential equations and strict local martingales
Abstract
We study a backward stochastic differential equation whose terminal condition is an integrable function of a local martingale and generator has bounded growth in . When the local martingale is a strict local martingale, the BSDE admits at least two different solutions. Other than a solution whose first component is of class D, there exists another solution whose first component is not of class D and strictly dominates the class D solution. Both solutions are integrable for any . These two different BSDE solutions generate different viscosity solutions to the associated quasi-linear partial differential equation. On the contrary, when a Lyapunov function exists, the local martingale is a martingale and the quasi-linear equation admits a unique viscosity solution of at most linear growth.
Keywords
Cite
@article{arxiv.1105.2973,
title = {On backward stochastic differential equations and strict local martingales},
author = {Hao Xing},
journal= {arXiv preprint arXiv:1105.2973},
year = {2011}
}
Comments
Keywords: Backward stochastic differential equation, strict local martingale, viscosity solution, comparison theorem