Density and tube estimates for diffusion processes under Hormander-type conditions

Dr. Paolo Pigato, Weierstrass Institute for Applied Analysis and Stochastics, Berlino

  • Date: 28 FEBRUARY 2019  at 16:00

  • Event location: Aula seminari - Dipartimento di Scienze Statistiche, I piano

  • Type: Statistics Seminars

Abstract: 

 "We recall some classic results on the regularity of solutions of stochastic differential equations. Then we consider two specific diffusion processes satisfying hypoellipticity conditions of Hormander type. Using Malliavin Calculus techniques recently developed to deal with degenerate problems, we find estimates for the density of the law of the solution, which we use to prove exponential bounds for the probability that the diffusion remains in a small tube, around a deterministic path, up to a given time. We then present some work in progress on asymptotic sharp estimates for the density and its derivatives for a similar, higher dimensional system."

 

L’Organizzatore                                                                                                         Il Direttore
Dott. Alberto Lanconelli                                                                                        Prof. Angela Montanari   

 

 La S.V. è invitata