Contractually stable networks
We develop a theoretical framework that allows us to study which bilateral links and coalition structures are going to emerge at equilibrium. We define the notion of coalitional network to represent a network and a coalition structure, where the network speciÖes the nature of the relationship each individual has with his coalition members and with individuals outside his coalition. To predict the coalitional networks that are going to emerge at equilibrium we propose the concept of contractual stability which requires that any change made to the coalitional network needs the consent of both the deviating players and their original coalition partners. We show that there always exists a contractually stable coalitional network under the simple majority decision rule and the component-wise egalitarian or majoritarian allocation rules. Moreover, requiring the consent of group members may help to reconcile stability and e¢ ciency.
|Date of creation:||May 2013|
|Date of revision:|
|Publication status:||Published, International Journal of Game Theory, 2013, 42, 2, 483-499|
|Note:||View the original document on HAL open archive server: http://hal.archives-ouvertes.fr/hal-00633611|
|Contact details of provider:|| Web page: http://hal.archives-ouvertes.fr/ |
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