Power Indices and Minimal Winning Coalitions in Simple Games with Externalities Abstract: We propose a generalization of simple games to situations with coalitional externalities. The main novelty of our generalization is a monotonicity property that we define for games in partition function form. This property allows us to properly speak about minimal winning embedded coalitions. We propose and characterize two power indices based on these kind of coalitions. We provide methods based on the multilinear extension of the game to compute the indices. Finally, the new indices are used to study the distribution of power in the current Parliament of Andalusia

José María Alonso-Meijide (), Mikel Álvarez-Mozos and María Gloria Fiestras-Janeiro ()
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José María Alonso-Meijide: Universidade de Santiago de Compostela
María Gloria Fiestras-Janeiro: Universidade de Vigo

No 2015/328, UB School of Economics Working Papers from University of Barcelona School of Economics

Keywords: Deegan-Packel Index; Public Good Index; Simple Games; Partition Function Form; Monotonicity; Multilinear Extension. (search for similar items in EconPapers)
JEL-codes: C71 (search for similar items in EconPapers)
Pages: 21 pages
Date: 2015
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