Regularity near the Initial State in the Obstacle Problem for a class of Hypoelliptic Ultraparabolic Operators

none3siThis paper is devoted to a proof of regularity, near the initial state, for solutions to the Cauchy–Dirichlet and obstacle problem for a class of second order differential operators of Kolmogorov type. The approach used here is general enough to allow us to consider smooth obstacles as well as non-smooth obstacles.noneS. Polidoro; K. Nystrom; A. PascucciS. Polidoro; K. Nystrom; A. Pascucc