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Bargaining and Networks in a Gas Bilateral Oligopoly

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  • Matteo M. Galizzi

Abstract

In the context of international gas markets, we investigate the interaction between price formation and communication networks in a bilateral duopoly with heterogeneous buyers. Given a particular buyers-sellers network graph, prices are formed as the outcome of dynamic decentralized negotiations among traders. We characterize, for any network structure, the full set of sub-game perfect Nash equilibria in pure and stationary strategies (PSSPNE) of the non-cooperative bargaining game with random order of proposals and simultaneous responses. Depending on the inter-temporal discount factor and the dispersion of reservation values across buyers, negotiations may lead, even in a completely connected buyers-sellers network, to multiple equilibria, co-existence of different prices, delays in trade and inefficient allocations. The endogenous bargaining power of each trader as a function of her position in the communication network is derived by comparing traders' payoffs across networks.

Suggested Citation

  • Matteo M. Galizzi, 2009. "Bargaining and Networks in a Gas Bilateral Oligopoly," Working Papers 0906, University of Brescia, Department of Economics.
    • Handle: RePEc:ubs:wpaper:0906
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    References listed on IDEAS

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    1. Charness, Gary & Corominas-Bosch, Margarida & Frechette, Guillaume R., 2007. "Bargaining and network structure: An experiment," Journal of Economic Theory, Elsevier, vol. 136(1), pages 28-65, September.
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    5. Matteo Maria GALIZZI, 2006. "Gas thin markets:insights from bargaining and networks models," Departmental Working Papers 2006-12, Department of Economics, Management and Quantitative Methods at Università degli Studi di Milano.
    6. Muthoo,Abhinay, 1999. "Bargaining Theory with Applications," Cambridge Books, Cambridge University Press, number 9780521576475.
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    11. Antoni Calvó-Armengol, 2002. "On bargaining partner selection when communication is restricted," International Journal of Game Theory, Springer;Game Theory Society, vol. 30(4), pages 503-515.
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    Cited by:

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    3. Del Boca, Alessandra & Fratianni, Michele & Spinelli, Franco & Trecroci, Carmine, 2010. "The Phillips curve and the Italian lira, 1861-1998," The North American Journal of Economics and Finance, Elsevier, vol. 21(2), pages 182-197, August.
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    5. Martin Meier & Enrico Minelli & Herakles Polemarchakis, 2014. "Competitive markets with private information on both sides," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 55(2), pages 257-280, February.
    6. Rosella Levaggi & Francesco Menoncin, 2009. "Decentralized provision of merit and impure public goods," Working Papers 0909, University of Brescia, Department of Economics.
    7. Bisin, A. & Geanakoplos, J.D. & Gottardi, P. & Minelli, E. & Polemarchakis, H., 2011. "Markets and contracts," Journal of Mathematical Economics, Elsevier, vol. 47(3), pages 279-288.
    8. Francesco Menoncin & Paolo Panteghini, 2009. "Retrospective Capital Gains Taxation in the Real World," CESifo Working Paper Series 2674, CESifo.
    9. Alessandro Fedele & Francesco Liucci & Andrea Mantovani, 2009. "Credit availability in the crisis: the European investment bank group," Working Papers 0913, University of Brescia, Department of Economics.

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