English

Path-by-path uniqueness of infinite-dimensional stochastic differential equations

Probability 2017-06-26 v1

Abstract

Consider the stochastic differential equation dXt=AXtdt+f(t,Xt)dt+dBt\mathrm dX_t = -A X_t \,\mathrm dt + f(t, X_t) \,\mathrm dt + \mathrm dB_t in a (possibly infinite-dimensional) separable Hilbert space, where BB is a cylindrical Brownian motion and ff is a just measurable, bounded function. If the components of ff decay to 0 in a faster than exponential way we establish path-by-path uniqueness for mild solutions of this stochastic differential equation. This extends A. M. Davie's result from Rd\mathbb R^d to Hilbert space-valued stochastic differential equations.

Keywords

Cite

@article{arxiv.1706.07720,
  title  = {Path-by-path uniqueness of infinite-dimensional stochastic differential equations},
  author = {Lukas Wresch},
  journal= {arXiv preprint arXiv:1706.07720},
  year   = {2017}
}
R2 v1 2026-06-22T20:27:48.025Z