We present a nonlinear ordinary differential equation model of the conflict between two actors, who could be individuals, groups, or nations. The state of each actor depends on its own state in isolation, its previous state in time, its inertia to change, and the positive feedback (cooperation)...

The model of dynamic social influence is used to describe the coordination of individual economic decisions. Computer simulations of the model show that the social and economic transitions occur as growing clusters of “new” in the sea of old. The model formulated at the individual level may...