On the path structure of a semimartingale arising from monotone probability theory
Let be the unique normal martingale such that =0 and d[]=(1−− ) d +d and let := + for all ≥0; the semimartingale arises in quantum probability, where it is the monotone-independent analogue of the Poisson process. The trajectories of are examined and various probabilistic properties are derived; in particular, the level set {≥0: =1} is shown to be non-empty, compact, perfect and of zero Lebesgue measure....