English

Generalised Brownian bridges: examples

Probability 2018-03-29 v3

Abstract

We observe that the probability distribution of the Brownian motion with drift cx1t-c \frac x {1-t} where c1c\not =1 is singular with respect to that of the classical Brownian bridge measure on [0,1][0,1], while their Cameron-Martin spaces are equal set-wise if and only if c>12c> \frac 12, providing also examples of exponential martingales on [0,1)[0,1) not extendable to a continuous martingale on [0,1][0,1]. Other examples of generalised Brownian bridges are also studied.

Keywords

Cite

@article{arxiv.1612.08716,
  title  = {Generalised Brownian bridges: examples},
  author = {Xue-Mei Li},
  journal= {arXiv preprint arXiv:1612.08716},
  year   = {2018}
}

Comments

To appear in Markov Processes and Related Fields

R2 v1 2026-06-22T17:35:25.450Z