English

On backward stochastic differential equations and strict local martingales

Probability 2011-12-13 v4

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 zz. 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 Lp\mathbb{L}^p integrable for any 0<p<10<p<1. 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

R2 v1 2026-06-21T18:07:36.673Z