Convergence dynamics and pseudo almost periodicity of a class of nonautonomous RFDEs with applications

This paper studies the dynamics of a system of retarded functional differential equations (i.e., RFDEs), which generalize the Hopfield neural network models, the bidirectional associative memory neural networks, the hybrid network models of the cellular neural network type, and some population growth model. Sufficient criteria are established for the globally exponential stability and the existence and uniqueness of pseudo almost periodic solution. The approaches are based on constructing suitable Lyapunov functionals and the well-known Banach contraction mapping principle. The paper ends with some applications of the main results to some neural network models and population growth models and numerical simulations.  2004 Elsevier Inc. All rights reserved