In this talk,I will report some results about SDEs driven by $alpha$-stable processes: derivative formula,gradient estimate and the existence and smoothenes
Furstenberg proved Szemeredis theorem using ergodic theory method.He then asked if the multiple ergodic average converges in $L^2$ sense or even pointwisely
By using the Skorohod equation we derive an iteration procedure which allows us to solve a class of reflected backward stochastic differential equations wit