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Market Size, Trade, and Productivity. Melitz, Marc J., and Gianmarco I. P. Ottaviano. 2008. Подготовила Растворцева Светлана Белгородский государственный университет. A monopolistically competitive model of trade Firm heterogeneity in terms of productivity differences
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Market Size, Trade, and Productivity Melitz, Marc J., and Gianmarco I. P. Ottaviano. 2008. Подготовила Растворцева Светлана Белгородский государственный университет
A monopolistically competitive model of trade • Firm heterogeneity in terms of productivity differences • Endogenous differences in the toughness of competition across markets – in terms of the number and average productivity of comp. firms
Market Size, Trade, and Productivity • Closed Economy • Open Economy • Trade Liberalization
1. ClosedEconomy1.1. Preferencesand DemandConsider an economy with L consumers, each supplying one unit of labor.All consumers share the same utility function given by (1)
1. Closed Economy1.1. Preferencesand Demand Assume The inverse demand for each variety i is then given by (2) (3)
1. Closed Economy1.2. Productionand Firm Behavior (7) (8) (9) (10) (11)
1. Closed Economy1.4. Parametrization of Technology (14) (13) (15)
2. Open Economy (18)
2. Open Economy (19)
2. Open Economy (20) (21)
2. Open Economy2.2. Prices, Product Variety, and Welfare (24) (25)
2. Open Economy2.3. Number of Entrants, Producers, and Exporters (26)
2. Open Economy2.4. Reciprocal Dumping and Arbitrage Opportunities
2. Open Economy2.5. The Impact of Trade2.6. Market Size Effects
3. Trade Liberalization3.1. Bilateral Liberalization3.2. Unilateral Liberalization3.3. Preferential Liberalization