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Stackelberg-Nash Equilibrium and Perfect Competition in the Solow-Uzawa Growth Model

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  • Wei-Bin Zhang

Abstract

Equilibrio de Stackelberg-Nash y la Competencia Perfecta en el modelo de crecimiento Solow-Uzawa Resumen: Este estudio introduce el equilibrio de Stackelberg-Nash en la teoría neoclásica del crecimiento. Intenta hacer que la teoría neoclásica del crecimiento económico sea más robusta en el modelado de la complejidad de las estructuras de mercado. El modelo de Solow-Uzawa se construye en el marco dos sectores. La economía se compone de dos sectores: el sector de bienes finales es el mismo que en el modelo de crecimiento de un solo sector de Solow, caracterizado por una competencia perfecta. El sector de bienes de consumo es el mismo que en el modelo de Uzawa, pero se caracteriza por el duopolio de Stackelberg. Se modela el comportamiento de los hogares con el concepto de Zhang de ingresos disponibles y utilidad. El modelo determina endógenamente los beneficios del duopolio que se distribuyen equitativamente entre la población homogénea. Se construye el modelo y luego se identifica la existencia de un punto de equilibrio a través de la simulación. Se realizan análisis estático-comparativos de algunos parámetros. También, se compara el rendimiento económico del modelo tradicional de Uzawa y el modelo con el equilibrio de Stackelberg-Nash. Se concluye que la competencia imperfecta aumenta la producción nacional, la riqueza nacional y el nivel de utilidad en comparación con la competencia perfecta. Abstract: This study introduces Stackelberg-Nash equilibrium to neoclassical growth theory. It attempts to make neoclassical economic growth theory more robust in modelling the complexity of market structures. The model is constructed within the framework of the Solow-Uzawa two-sector model. The economy is composed of two sectors. The final goods sector is the same as in the Solow one-sector growth model which is characterized by perfect competition. The consumer goods sector is the same as the consumer goods sector in the Uzawa model but is characterized by Stackelberg duopoly. We model household behavior with Zhang’s concept of disposable income and utility. The model endogenously determines profits of duopoly which are equally distributed among the homogeneous population. We build the model and then identify the existence of an equilibrium point through simulation. We conduct comparative static analyses of some parameters. We also compare the economic performance of the traditional Uzawa model and the model with the Stackelberg-Nash equilibrium. We conclude that the imperfect competition increases national output, national wealth, and utility level in comparison to perfect competition.

Suggested Citation

  • Wei-Bin Zhang, 2021. "Stackelberg-Nash Equilibrium and Perfect Competition in the Solow-Uzawa Growth Model," Revista Lecturas de Economía, Universidad de Antioquia, CIE, issue No. 96, pages 315-343, November.
  • Handle: RePEc:col:000174:020487
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    References listed on IDEAS

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    More about this item

    Keywords

    Competencia Stackelberg; líder y seguidor; competencia perfecta; acumulación decapital; modelo Solow; modelo Uzawa; beneficio;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • B40 - Schools of Economic Thought and Methodology - - Economic Methodology - - - General

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