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Equivalence of the Aubin bargaining set and the set of competitive equilibria in a finite coalition production economy

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  • Liu, Jiuqiang

Abstract

Mas-Colell (Mas-Colell, 1989) proved that the bargaining set and the set of competitive allocations coincide in an exchange economy with a continuum of traders under some standard assumptions. In the case of pure exchange economies with a finite number of traders it is well-known that the set of competitive allocations could be a strict subset of the core which can also be a strict subset of the bargaining set. In this paper, we show that the Aubin bargaining set (or fuzzy bargaining set) and the set of competitive allocations coincide in a finite coalition production economy under some standard assumptions. We also show that the (Mas-Colell) bargaining set shrinks to the set of competitive allocations in a finite coalition production economy E under some standard conditions when E is replicated. As a consequence, the existence of competitive equilibrium in a finite coalition production economy implies the nonemptiness of Aubin bargaining sets.

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  • Liu, Jiuqiang, 2017. "Equivalence of the Aubin bargaining set and the set of competitive equilibria in a finite coalition production economy," Journal of Mathematical Economics, Elsevier, vol. 68(C), pages 55-61.
    • Handle: RePEc:eee:mateco:v:68:y:2017:i:c:p:55-61
    DOI: 10.1016/j.jmateco.2016.11.003
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    References listed on IDEAS

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    Cited by:

    1. Jiuqiang Liu, 2022. "Equivalence of Competitive Equilibria, Fuzzy Cores, and Fuzzy Bargaining Sets in Finite Production Economies," Mathematics, MDPI, vol. 10(18), pages 1-16, September.
    2. Graziano, Maria Gabriella & Pesce, Marialaura & Urbinati, Niccolò, 2020. "Generalized coalitions and bargaining sets," Journal of Mathematical Economics, Elsevier, vol. 91(C), pages 80-89.
    3. Hervés-Beloso, Carlos & Hervés-Estévez, Javier & Moreno-García, Emma, 2018. "Bargaining sets in finite economies," Journal of Mathematical Economics, Elsevier, vol. 74(C), pages 93-98.
    4. Yang, Zhe & Zhang, Xian, 2021. "A weak α-core existence theorem of games with nonordered preferences and a continuum of agents," Journal of Mathematical Economics, Elsevier, vol. 94(C).
    5. Bhowmik, Anuj & Saha, Sandipan, 2023. "Bargaining-equilibrium equivalence," MPRA Paper 117194, University Library of Munich, Germany.
    6. Bhowmik, Anuj & Saha, Sandipan, 2023. "Restricted bargaining sets in a club economy," MPRA Paper 119210, University Library of Munich, Germany.

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