Stability analysis of the Grossman-Helpman model of endogenous product cycles

This paper analyses the stability properties of the Grossman-Helpman [Grossman, G. Helpman, E., 1991b. Endogenous product cycles. The Economic Journal 101, 1229-1241] product-variety model of endogenous product cycles. It has been shown that there exists a unique saddle path converging to the steady state growth equilibrium of this model in the wide gap case as well as in the narrow gap case.