On the existence and stability of periodic solutions for hopfield neural network equations with delay

AbstractSufficient conditions are obtained for the existence, uniqueness and ability of T-periodic solutions for the Hopfield neural, network equations with delay $$\dot u_i (t) = - b_i u_i (t) + \sum\limits_{j = 1}^n {T_{ij} (t)} f(u(t - \tau )) + I_i (t).$$