Network structure, equilibrium and dynamics in a monopolistically competitive economy

  • Tamás SebestyénEmail author
  • Dóra Longauer


Although network theory has been busy to emphasize the role of connection structures in shaping aggregate level phenomena of complex systems, there are only few attempts in economic modeling which try to build this dimension into the analysis. Macroeconomic models typically build on complete connectedness among economic actors (frictionless flow of information, perfect information on prices), thus these models typically oversee the possible effects of complex, incomplete network structures among economic agents on emergent macroeconomic phenomena. In this paper we try to fill this gap by incorporating possibly incomplete relationship structures between economic actors in a standard model of monopolistic competition and then analyze the effect of different network structures on the equilibrium and dynamic properties of the model. Analytical and simulation results of the model show that incomplete connectedness give rise to deadweight loss, shrinking output below the level observed in standard models with complete networks. Also, the dynamics of link formation has an effect on the steady state of the economy as well as on its response to shocks.


Monopolistic competition Network structure Incomplete information Preferential attachment 


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The research presented in this paper was supported by the ÚNKP-17-4-III New National Excellence Program of the Hungarian Ministry of Human Capacities.


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Authors and Affiliations

  1. 1.Department of Economics and Econometrics and MTA-PTE Innovation and Economic Growth Research GroupUniversity of Pécs Faculty of Business and EconomicsPécsHungary
  2. 2.PhD Program in Regional Policy and EconomicsUniversity of Pécs Faculty of Business and EconomicsPécsHungary

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