The area monotonic solution is examined, when the utilities of the players as well as the Pareto frontier change in time. A divert method is introduced to characterize the change in the solution of the conflict which is based on deriving a special ordinary differential equation such that its...

The Herfindahl--Hirschman Index is one of the most commonly used indicators to detect anticompetitive behaviour in industries. In fact, an increase in the value of the index is usually interpreted as an indicator of actions which may lessen competition or even create a monopoly. In this article...