Study of ODE limit problems for reaction-diffusion equations

Abstract

In this work we study ODE limit problems for reaction-diffusion equations for large diffusion and we study the sensitivity of nonlinear ODEs with respect to initial conditions and exponent parameters. Moreover, we prove continuity of the flow and weak upper semicontinuity of a family of global attractors for reaction-diffusion equations with spatially variable exponents when the exponents go to 2 in \(L^{\infty}(\Omega)\) and the diffusion coefficients go to infinity.

Keywords

• ODE limit problems
• shadow systems
• reaction-diffusion equations
• parabolic problems
• variable exponents
• attractors
• upper semicontinuity