Abstract:
We consider a reaction-diffusion system of two equations, where one equation has a small diffusion coefficient $\delta>0$. We construct the trajectory attractor $\mathfrak A^\delta$ of such a system. We also study the limit system for $\delta=0$. In this system one equation is an ordinary differential equation in $t$, but is considered in the domain $\Omega\times\mathbb R_+$, where $\Omega\Subset\mathbb R^n$ and
$\mathbb R_+$ is the positive time axis, $t$. We construct the trajectory attractor $\mathfrak A^0$ of the limit system. The main result is a convergence theorem: $\mathfrak A^\delta\to\mathfrak A^0$ as
$\delta\to0^+$ in the corresponding topology.
Bibliography: 18 titles.