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| Equilibrio di Arrow-Debreu× | Concorrenza di Cournot× | |
|---|---|---|
| Campo | Teoria dei giochi | Teoria dei giochi |
| Famiglia | Machine learning | Machine learning |
| Anno di origine≠ | 1954 | 1838 |
| Ideatore≠ | Kenneth Arrow, Gerard Debreu | Augustin-Louis Cournot |
| Tipo | algorithm | algorithm |
| Fonte seminale≠ | Arrow, K. J., & Debreu, G. (1954). Existence of an equilibrium for competitive economies. Econometrica, 22(3), 265-290. DOI ↗ | Cournot, A. A. (1838). Recherches sur les principes mathématiques de la théorie des richesses. L. Hachette. link ↗ |
| Alias | Walrasian Equilibrium, General Equilibrium, Competitive Equilibrium | Quantity Competition, Cournot Equilibrium, Cournot-Nash Equilibrium |
| Correlati | 4 | 4 |
| Sintesi≠ | The Arrow-Debreu model is a general equilibrium framework where prices adjust to clear all markets simultaneously, and consumers and firms optimize given those prices. Introduced by Kenneth Arrow and Gerard Debreu in 1954, the model extends Adam Smith's invisible hand concept into a rigorous mathematical framework. Arrow-Debreu equilibrium proves existence, uniqueness (under certain conditions), and Pareto efficiency of competitive equilibria. | Cournot Competition models oligopolistic markets where firms choose quantities simultaneously, not prices. Originally formulated by Augustin-Louis Cournot in 1838, the model assumes each firm's profit depends on the total market quantity produced. The resulting Cournot-Nash Equilibrium captures the strategic interaction where each firm maximizes profit given competitors' quantities, leading to prices between monopoly and perfect competition levels. |
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