Exponential growth rate for derivatives of stochastic flows
  We show that for a large class of stochastic flows the spatial derivative grows at most exponentially fast even if one takes the supremum over a bounded set of initial points. We derive explicit bounds on the growth rates that depend on the local characteristics of the flow and the box dimension of the set. 
Holger van Bargen, Michael Scheutzow, Simon Wasserroth
math.PR