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One-way flow networks: the role of heterogeneity

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  • Andrea Galeotti

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Abstract

I study a one-way flow connections model in which players are heterogeneous with respect to values and the costs of establishing a link. I first show that values and costs asymmetries are crucial in determining the level of connectedness of a network. Interestingly, unconnected equilibria are asymmetric and central players may emerge. Second, I show that non-singleton components have a wheel architecture as far as the costs of linking are not partner specific. Otherwise also the flower architecture constitutes an equilibrium. I interpret these results as saying that asymmetric connections across players are a peculiar feature of homogeneous environments; by contrast, in heterogeneous settings players hold asymmetric connections, which are accompanied by the emergence of central players.

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File URL: http://hdl.handle.net/10.1007/s00199-005-0015-0
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Bibliographic Info

Article provided by Springer in its journal Economic Theory.

Volume (Year): 29 (2006)
Issue (Month): 1 (September)
Pages: 163-179

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Handle: RePEc:spr:joecth:v:29:y:2006:i:1:p:163-179

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Related research

Keywords: Network formation; Heterogeneity; D85; C72;

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  1. Falk, Armin & Kosfeld, Michael, 2003. "It's All About Connections: Evidence on Network Formation," CEPR Discussion Papers 3970, C.E.P.R. Discussion Papers.
  2. Haller, Hans & Sarangi, Sudipta, 2005. "Nash networks with heterogeneous links," Mathematical Social Sciences, Elsevier, vol. 50(2), pages 181-201, September.
  3. Slikker, M. & Nouweland, C.G.A.M. van den, 1997. "A One-Stage Model of Link Formation and Payoff Division," Discussion Paper 1997-23, Tilburg University, Center for Economic Research.
  4. Basu, K. & Weibull, J., 1990. "Strategy Subsets Closed Under Rational Behavior," Papers 62, Princeton, Woodrow Wilson School - Discussion Paper.
  5. Venkatesh Bala & Sanjeev Goyal, 2000. "A Noncooperative Model of Network Formation," Econometrica, Econometric Society, vol. 68(5), pages 1181-1230, September.
  6. McBride, Michael, 2006. "Imperfect monitoring in communication networks," Journal of Economic Theory, Elsevier, vol. 126(1), pages 97-119, January.
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