Uniqueness and stability for coexistence solutions of the unstirred chemostat model

This article deals with the uniqueness and stability of coexistence solutions of a basic N-dimensional competition model in the unstirred chemostat by Lyapunov-Schmidt procedure and perturbation technique. It turns out that if the parameter G 0, which is given in Theorem 1.1, this model has a unique coexistence solution provided that the maximal growth rates a, b of u, v, respectively, lie in a certain range. Moreover, the unique coexistence solution is globally asymptotically stable if G 0, while it is unstable if G 0. In the later case, the semitrivial equilibria are both stable.