Stability of travelling wavefronts in discrete reaction–diffusion equations with nonlocal delay effects

Abstract

This paper deals with travelling wavefronts for temporally delayed, spatially discrete reaction–diffusion equations. Using a combination of the weighted energy method and the Green function technique, we prove that all noncritical wavefronts are globally exponentially stable, and critical wavefronts are globally algebraically stable when the initial perturbations around the wavefront decay to zero exponentially near minus infinity regardless of the magnitude of time delay.