Special Session 74: 

The parametrix method for parabolic SPDEs

Andrea Pascucci
University of Bologna
Italy
Co-Author(s):    Andrea Pascucci, Antonello Pesce
Abstract:
We consider the Cauchy problem for a linear stochastic partial differential equation. By extending the parametrix method for PDEs whose coefficients are only measurable with respect to the time variable, we prove existence, regularity in H\older classes and estimates from above and below of the fundamental solution. This result is applied to SPDEs by means of the It\^o-Wentzell formula, through a random change of variables which transforms the SPDE into a PDE with random coefficients.