Explore the fourth lecture in a series on mixing for nonlinear partial differential equations (PDEs) perturbed by bounded random forces. Delve into advanced mathematical concepts presented by speaker Sergei Kuksin during the School and Workshop on Mixing and Control. Gain insights into the complex interplay between nonlinear PDEs and random perturbations, building upon previous lectures in the series. Enhance your understanding of this specialized topic in mathematics through this comprehensive 1-hour and 18-minute presentation from the ICTP Mathematics organization.