Mathematics – Probability
Scientific paper
2012-02-13
Mathematics
Probability
5 pages - new version correcting minor mistakes of the original one
Scientific paper
We present a self-contained proof of the following result: a random time is an honest time avoiding all stopping times if and only if it coincides with the (first) time that a nonnegative local martingale with continuous supremum process and zero terminal value achieves its overall maximum, given that this time of maximum is almost surely finite. The requirement that all martingales on the stochastic basis have continuous paths, which was present in previous literature, is dropped.
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