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The Industry Supply Function and the Long-Run Competitive Equilibrium with Heterogeneous Firms

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  • Ignacio Esponda
  • Demian Pouzo

Abstract

In developing the theory of long-run competitive equilibrium (LRCE), Marshall (1890) used the notion of a representative firm. The identity of this firm, however, remained unclear. Subsequent theory either focused on the case where all firms are identical or else incorporated heterogeneity but disregarded the notion of a representative firm. Using Hopenhayn's (1992) model of competitive industry dynamics, we extend the theory of LRCE to account for heterogeneous firms and show that the long-run supply function can indeed be characterized as the solution to the minimization of a representative average cost function.

Suggested Citation

  • Ignacio Esponda & Demian Pouzo, 2016. "The Industry Supply Function and the Long-Run Competitive Equilibrium with Heterogeneous Firms," Papers 1612.09549, arXiv.org, revised Sep 2019.
    • Handle: RePEc:arx:papers:1612.09549
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    References listed on IDEAS

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    1. Lucas, Robert E, Jr & Prescott, Edward C, 1971. "Investment Under Uncertainty," Econometrica, Econometric Society, vol. 39(5), pages 659-681, September.
    2. Richard Ericson & Ariel Pakes, 1995. "Markov-Perfect Industry Dynamics: A Framework for Empirical Work," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 62(1), pages 53-82.
    3. Jovanovic, Boyan, 1982. "Selection and the Evolution of Industry," Econometrica, Econometric Society, vol. 50(3), pages 649-670, May.
    4. Arrigo Opocher & Ian Steedman, 2008. "The industry supply curve: Two different traditions," The European Journal of the History of Economic Thought, Taylor & Francis Journals, vol. 15(2), pages 247-274.
    5. Hopenhayn, Hugo A, 1992. "Entry, Exit, and Firm Dynamics in Long Run Equilibrium," Econometrica, Econometric Society, vol. 60(5), pages 1127-1150, September.
    6. Robert E. Lucas & Jr., 1967. "Adjustment Costs and the Theory of Supply," Journal of Political Economy, University of Chicago Press, vol. 75(4), pages 321-321.
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    Cited by:

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    2. Enrico De Monte, 2020. "Entry, Exit and Productivity: Evidence from French Manufacturing Firms," Working Papers of BETA 2020-07, Bureau d'Economie Théorique et Appliquée, UDS, Strasbourg.

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