A Lévy process is a stochastic process taking values in Euclidean
space
,
with
almost
surely, stationary independent increments, and stochastic
continuity. Thus, for
,
the statistical distribution of
depends only on
, and increments over disjoint
time intervals are independent
random variables.
Every Lévy process is determined in law by the infinitely divisible distribution of . Standard Brownian motion
and the Poisson process are basic examples, respectively
having continuous paths and jump paths.