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The core of games on k-regular set systems

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In the classical setting of cooperative game theory, it is always assumed that all coalitions are feasible. However in many real situations, there are restrictions on the set of coalitions, for example duo to communication, order or hierarchy on the set of players, etc. There are already many works dealing with games on restricted set of coalitions, defining many different structures for the set of feasible coalitions, called set systems. We propose in this paper to consider k-regular set systems, that is, set systems having all maximal chains of the same length k. This is somehow related to communication graphs. We study in this perspective the core of games defined on k-regular set systems. We show that the core may be unbounded and without vertices in some situations.

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File URL: ftp://mse.univ-paris1.fr/pub/mse/CES2009/09055.pdf
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Paper provided by Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne in its series Documents de travail du Centre d'Economie de la Sorbonne with number 09055.

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Length: 22 pages
Date of creation: Sep 2009
Date of revision: Oct 2009
Handle: RePEc:mse:cesdoc:09055

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Keywords: Cooperative game; feasible coalition; core.;

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