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Reduced equivalent form of a financial structure

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  • Aouani, Zaier
  • Cornet, Bernard

Abstract

We consider the two-date model of a financial exchange economy (E,F), with agents’ portfolio restrictions either represented by finitely many linear inequality constraints or satisfying Hart’s (1974) Weak No Market Arbitrage condition. The economy (E,F) is shown to have the same consumption equilibria as a reduced economy (E,F′), for which the set of admissible portfolio allocations is bounded. Building upon the equilibrium existence result for reduced financial economies (E,F′) (Aouani and Cornet, 2009), we then deduce the existence of equilibra of (E,F), under standard assumptions on the consumption side and under the aforementioned assumption on the financial side.

Suggested Citation

  • Aouani, Zaier & Cornet, Bernard, 2011. "Reduced equivalent form of a financial structure," Journal of Mathematical Economics, Elsevier, vol. 47(3), pages 318-327.
  • Handle: RePEc:eee:mateco:v:47:y:2011:i:3:p:318-327
    DOI: 10.1016/j.jmateco.2010.12.015
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    Cited by:

    1. Aouani, Zaier & Cornet, Bernard, 2009. "Existence of financial equilibria with restricted participation," Journal of Mathematical Economics, Elsevier, vol. 45(12), pages 772-786, December.
    2. Jean-Marc Bonnisseau & Achis Chery, 2014. "On the equivalence of financial structures with long-term assets," Documents de travail du Centre d'Economie de la Sorbonne 14081, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    3. repec:eee:mateco:v:70:y:2017:i:c:p:115-122 is not listed on IDEAS
    4. Cea-Echenique, Sebastián & Torres-Martínez, Juan Pablo, 2014. "General Equilibrium with Endogenous Trading Constraints," MPRA Paper 55359, University Library of Munich, Germany.
    5. Sebastián Cea-Echenique & Carlos Hervés-Beloso & Juan Pablo Torres-Martínez, 2017. "Endogenous differential information," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 63(1), pages 51-72, January.
    6. Cea-Echenique, Sebastián & Torres-Martínez, Juan Pablo, 2016. "Credit segmentation in general equilibrium," Journal of Mathematical Economics, Elsevier, vol. 62(C), pages 19-27.
    7. Bernard Cornet & Abhishek Ranjan, 2013. "A remark on the set of arbitrage-free prices in a multi-period model," International Journal of Economic Theory, The International Society for Economic Theory, vol. 9(1), pages 35-43, March.
    8. Sebastián Cea-Echenique & Carlos Hervés-Beloso & Juan Pablo Torres-Martínez, 2012. "Endogenous Information: The Role of Sequential Trade and Financial Participation," Working Papers wp361, University of Chile, Department of Economics.
    9. Faias, Marta & Torres-Martínez, Juan Pablo, 2017. "Credit market segmentation, essentiality of commodities, and supermodularity," Journal of Mathematical Economics, Elsevier, vol. 70(C), pages 115-122.
    10. Zaier Aouani & Bernard Cornet, 2017. "Eliminating useless portfolios in constrained financial economies," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 63(1), pages 159-190, January.
    11. Miguel A. Iraola & Juan Pablo Torres-Martinez, 2013. "Liquidity Contractions, Incomplete Financial Participation and the Prevalence of Negative Equity Non-Recourse Loans," Working Papers 2013-08, University of Miami, Department of Economics.
    12. Sebastián Cea-Echenique & Juan Pablo Torres-Martínez, 2015. "Credit segmentation in general equilibrium," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-01151576, HAL.
    13. Víctor Pérez Fernández & Juan Pablo Torres-Martínez, 2012. "Incomplete Financial Participation: Exclusive Markets, Investment Clubs, and Credit Risk," Working Papers wp363, University of Chile, Department of Economics.
    14. A. Jofré & R. T. Rockafellar & R. J-B. Wets, 2017. "General economic equilibrium with financial markets and retainability," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 63(1), pages 309-345, January.
    15. repec:bpj:bejtec:v:18:y:2018:i:1:p:12:n:12 is not listed on IDEAS

    More about this item

    Keywords

    Restricted participation; Portfolio constraints; Financial exchange economy; Reduced financial structure; Equivalent financial structure; Arbitrage-free prices; Consumption equilibrium;

    JEL classification:

    • C62 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Existence and Stability Conditions of Equilibrium
    • D52 - Microeconomics - - General Equilibrium and Disequilibrium - - - Incomplete Markets
    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets

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