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Monopolistic Competition in General Equilibrium: Beyond the CES

Author

Listed:
  • Evgeny Zhelobodko

    (Novosibirsk State University, Russia)

  • Sergey Kokovin

    (Novosibirsk State University (Russia) and Sobolev Institute of Mathematics (Russia))

  • Mathieu Parenti

    (Université de Paris 1 and PSE, France)

  • Jacques-François Thisse

    (CORE, Université catholique de Louvain (Belgium), Université du Luxembourg (Luxembourg), CEPR (UK), and RIEB, Kobe University (Japan))

Abstract

We propose a general model of monopolistic competition and derive a complete characterization of the market equilibrium using the concept of Relative Love for Variety. When the RLV increases with individual consumption, the market generates pro-competitive effects. When it decreases, the market mimics anti-competitive behavior. The CES is a borderline case. We extend our setting to heterogeneous firms and show that the cutoff cost decreases (increases) when the RLV increases (decreases). Last, we study how combining vertical, horizontal and cost heterogeneity affects our results.

Suggested Citation

  • Evgeny Zhelobodko & Sergey Kokovin & Mathieu Parenti & Jacques-François Thisse, 2011. "Monopolistic Competition in General Equilibrium: Beyond the CES," Discussion Paper Series DP2011-16, Research Institute for Economics & Business Administration, Kobe University.
  • Handle: RePEc:kob:dpaper:dp2011-16
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    File URL: https://www.rieb.kobe-u.ac.jp/academic/ra/dp/English/DP2011-16.pdf
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    References listed on IDEAS

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    Cited by:

    1. Igor Bykadorov & Andrea Ellero & Stefania Funari & Sergey Kokovin & Pavel Molchanov, 2016. "Painful Birth of Trade Under Classical Monopolistic Competition," HSE Working papers WP BRP 132/EC/2016, National Research University Higher School of Economics.
    2. Lu, Yi & Tao, Zhigang & Yu, Linhui, 2011. "Agglomeration and Markup," MPRA Paper 38974, University Library of Munich, Germany, revised May 2012.
    3. Costas Arkolakis & Arnaud Costinot & Dave Donaldson & Andrés Rodríguez-Clare, 2019. "The Elusive Pro-Competitive Effects of Trade," Review of Economic Studies, Oxford University Press, vol. 86(1), pages 46-80.
    4. Paolo Bertoletti & Federico Etro, 2014. "Pricing to market in the Krugman model," Economics Bulletin, AccessEcon, vol. 34(1), pages 459-468.
    5. Zhelobodko, E. & Sidorov, A. & Thisse, J.-F., 2013. "Monopolistic Competition vs Oligopoly in the "Large Economy": How Much Is Difference?," Journal of the New Economic Association, New Economic Association, vol. 19(3), pages 10-26.
    6. Igor A. Bykadorov & Alexey A. Gorn & Sergey G. Kokovin & Evgeny V. Zhelobodko, 2014. "Losses From Trade In Krugman’s Model: Almost Impossible," HSE Working papers WP BRP 61/EC/2014, National Research University Higher School of Economics.
    7. Mathieu Parenti & Alexander V. Sidorov & Jacques-François Thisse & Evgeny V. Zhelobodko, 2017. "Cournot, Bertrand or Chamberlin: Toward a reconciliation," International Journal of Economic Theory, The International Society for Economic Theory, vol. 13(1), pages 29-45, March.
    8. Feenstra, Robert C., 2018. "Restoring the product variety and pro-competitive gains from trade with heterogeneous firms and bounded productivity," Journal of International Economics, Elsevier, vol. 110(C), pages 16-27.
    9. Bykadorov, Igor & Gorn, Alexey & Kokovin, Sergey & Zhelobodko, Evgeny, 2015. "Why are losses from trade unlikely?," Economics Letters, Elsevier, vol. 129(C), pages 35-38.
    10. Vladimir Matveenkov, 2012. "Structure of Equilibria in a Model of Endogenous Growth with Horizontal Innovations," DEGIT Conference Papers c017_051, DEGIT, Dynamics, Economic Growth, and International Trade.
    11. Thomas Favory, 2020. "Multiproduct Firms and Discrete Choice Models of Demand: Existence and Uniqueness of the Bertrand-Nash Equilibrium," Economics Discussion / Working Papers 20-24, The University of Western Australia, Department of Economics.
    12. Steinwender, Claudia, 2015. "The roles of import competition and export opportunities for technical change," LSE Research Online Documents on Economics 61154, London School of Economics and Political Science, LSE Library.
    13. Parenti, Mathieu & Sidorov, Alexander & Thisse, Jacques-François, 2014. "Revisiting Cournot and Bertrand in the presence of income effects," MPRA Paper 69641, University Library of Munich, Germany.
    14. Yoshitsugu Kanemoto, 2012. "Cost-Benefit Analysis in Monopolistic Competition Models of Urban Agglomeration," GRIPS Discussion Papers 12-04, National Graduate Institute for Policy Studies.

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    More about this item

    Keywords

    Monopolistic competition; Additive preferences; Love for variety; Heterogeneous firms;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • F12 - International Economics - - Trade - - - Models of Trade with Imperfect Competition and Scale Economies; Fragmentation
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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