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Welfare Analysis in Games with substitutabilities

  • Yann Rébillé

    ()

    (LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - Université de Nantes : EA4272)

  • Lionel Richefort

    ()

    (LEMNA - Laboratoire d'économie et de management de Nantes Atlantique - Université de Nantes : EA4272)

This paper investigates the social optimum in network games of strategic substitutes and identifies how network structure shapes optimal policies. First, we show that the socially optimal profile is ob-tained through a combination of two opposite network effects, generated by the incoming and the outgoing weighted Bonacich centrality measures. Next, three different policies that restore the social optimum are derived, and the implications of the predecessor(s)-successor(s) relationship between the agents on each policy instrument are explored. Then, the link between optimal taxes and the density of the network is established.

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Paper provided by HAL in its series Working Papers with number hal-00732950.

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Date of creation: 17 Sep 2012
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Handle: RePEc:hal:wpaper:hal-00732950
Note: View the original document on HAL open archive server: http://hal.archives-ouvertes.fr/hal-00732950
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