On the upper semicontinuity of pullback attractors for multi-valued noncompact random dynamical systems

In this paper, we first present some conditions for the upper semi continuity of pullback attractors for multi-valued noncompact random dynamical systems with small perturbations. Then we establish the upper semi continuity of pullback attractors for nonautonomous and stochastic reaction diffusion delay equations defined on R-n with small time delay perturbation for which uniqueness of solutions need not hold. Finally, we prove the existence and upper semicontinuity of pullback attractors for nonautonomous and stochastic nonclassical diffusion equations with polynomial growth nonlinearity of arbitrary order and without the uniqueness of solutions.