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Pullback attractors of nonautonomous dynamical systems
We present the necessary and sufficient conditions and a new
method to study the existence of pullback attractors of
nonautonomous infinite dimensional dynamical systems. For
illustrating our method, we apply it to nonautonomous 2D
Navier-Stokes systems. We also show that the parametrically
inflated pullback attractors and uniform attractors are robust
with respect to the perturbations of both cocycle mappings and
driving systems. As an example, we consider the nonautonomous 2D
Navier-Stokes system with rapidly oscillating external force.