Research on coordination and competition in two oligarch enterprises repeated game

The key issue of cooperation in two oligarch enterprises repeated game is to get the conditions of its discount factor by the construction of the trigger strategy. Based on the Bertrand model, we establish a new trigger strategy, obtain the conditions of discount factor and price situation in terms of collusion, its conclusions are consistent with previous studies. Under the common Competitive conditions, we provide a dynamic model for two oligarch enterprises competing for prices, prove that equilibrium is existent. In conclusion, we suggest a range for effective adjustment of price at the common first-phase game.