Melitz, Marc J., and Gianmarco I. P. Ottaviano. 2008.
Подготовила Растворцева СветланаБелгородский государственный университет
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• 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
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Market Size, Trade, and Productivity
• Closed Economy• Open Economy• Trade Liberalization
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1. Closed Economy1.1. Preferences and DemandConsider an economy with L consumers, each supplying one unit of labor. All consumers share the same utility function given by
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1. Closed Economy1.1. Preferences and Demand Assume The inverse demand for each variety i is then given by
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1. Closed Economy1.1. Preferences and Demand
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1. Closed Economy1.2. Production and Firm Behavior
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1. Closed Economy1.2. Production and Firm Behavior
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1. Closed Economy1.3. Free Entry Equilibrium
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1. Closed Economy1.4. Parametrization of Technology
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1. Closed Economy1.4. Parametrization of Technology
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1. Closed Economy1.4. Parametrization of Technology
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1. Closed Economy1.4. Parametrization of Technology
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1. Closed Economy1.5. A Short-Run Equilibrium
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1. Closed Economy1.5. A Short-Run Equilibrium
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2. Open Economy
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2. Open Economy
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2. Open Economy
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2. Open Economy
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2. Open Economy2.1. Free Entry Condition
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2. Open Economy2.1. Free Entry Condition
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2. Open Economy2.2. Prices, Product Variety, and Welfare
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2. Open Economy2.2. Prices, Product Variety, and Welfare
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2. Open Economy2.3. Number of Entrants, Producers, and Exporters
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2. Open Economy2.4. Reciprocal Dumping and Arbitrage Opportunities
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2. Open Economy2.5. The Impact of Trade2.6. Market Size Effects
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2. Open Economy2.7. The Open Economy in the Short-Run
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2. Open Economy2.7. The Open Economy in the Short-Run
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2. Open Economy2.7. The Open Economy in the Short-Run