Pullback Attractors for a Non-Autonomous Semilinear Degenerate Parabolic Equation on ℝ N
Nguyen Dinh Binh, Nguyen Nhu Thang, Le Thi Thuy



In this paper, we prove the existence of pullback attractors for the following non-autonomous semilinear degenerate parabolic equation on ℝ N:

ut div (σ(x)u)+λu+f(x,u)=g(x,t),

under a new condition concerning a variable non-negative diffusivity σ(⋅), an arbitrary polynomial growth order of the nonlinearity f and an exponent growth of the non-autonomous external force g.