Existence Of Solutions. WITH DELAY Diffusion Nicholson Flies Equation Wave Before

In this paper, we study the existence of traveling wave fronts for the diffusive Nicholson's blowflies equation with time delay and the spatially discrete Nicholson's blowflies equation. The existence of such solutions is proved using the upper-lower solution technique.The whole paper consists of three chapters. In Chapter 1, we introduce some elementary concepts and results of the upper-lower solution technique. In Chapter 2, we consider the existence of traveling wave fronts for delayed Nicholson's blowflies equation with relaxed quasimonotonicity condition by the upper-lower solution technique. In Chapter 3, we consider a class of spatially discrete Nicholson's blowflies equation.